Please note, schedule is subject to change. More events to be added as confirmed. 
While many activities are free, those marked with a $ carry a fee. Unless otherwise indicated, activities are open to all.

See who's coming!

Thursday, May 17

Class Reunions for 1948, 1953, 1958, 1963, 1968

11:30 AM - 1:30 PM


5:00 - 6:00 PM





6:00 - 7:15 PM

7:30 - 10:00 PM

Class of 1953 Lunch
Join your classmates for a reunion lunch at Tom Mannion’s home.

Tom Mannion’s House, 400 S. Hill Ave. / $30

William & Myrtle Harris Distinguished Lectureship in Science and Civilization
Science vs. Intuition: Why Scientific Ideas Elude the Human Mind
Andrew Shtulman, Associate Professor, Cognitive Science; Psychology, Occidental College

Scientific ideas are difficult to teach, difficult to learn, and difficult to accept as true because they contradict our intuitive theories of how the world works -- theories constructed in childhood but retained across the lifespan, influencing our thinking even as adults. In this talk, I will discuss what intuitive theories are, where they come from, and why they blind us to more accurate theories of the world.
Baxter Lecture Hall

President’s Reception for Classes of ’48, ’53, ’58, ’63, ’68
President Thomas F. Rosenbaum and Professor Katherine T. Faber welcome members of the 50th – 70th reunion classes back to Caltech at this special reception to kick off your reunion weekend.

Tent, President’s House Lawn

Reunion Dinners for Classes of ’48, ’53, ’58, ’63, ’68

Athenaeum, 551 S. Hill Ave. / $75

Friday, May 18

8:00 - 10:00 AM

9:30 - 11:45 AM

12:00 - 2:00 PM

2:00 - 4:00 PM




2:00 - 5:00 PM



2:30 - 4:30 PM

2:30 - 3:30 PM




2:30 - 4:00 PM


3:00 - 5: 00 PM



5:30 - 7:30 PM


7:30 - 10:00 PM


10:00 PM - 1:00 AM

Continental Breakfast
Enjoy the company of your classmates and fellow alumni over an al fresco breakfast in the garden.

Alumni House, 345 S. Hill Ave. / $10

Campus Architectural Tour
Discover how architects developed a campus of great beauty to house academic buildings and high-tech laboratories so that scientists and engineers would become more aware of the aesthetic values of life.

Learn about the history of Caltech’s architecture from Romy Wyllie, author of Caltech’s Architectural Heritage: From Spanish Tile to Modern Stone and director of Caltech Architectural Tour Service (CATS).  Then gain a new perspective (and discover some hidden treasures) through a campus walking tour led by members of CATS.

9:30 a.m.            Tour departs from Alumni House
10:00 a.m.          Illustrated Lecture (45 minutes)
10:45 a.m.          Walking Tour (1 hour)
11:45 a.m.           Tour ends at the Athenaeum

Departs from Alumni House, 345 S. Hill Ave.

Half Century Club Luncheon
The Half Century Club is a special group of Caltech undergraduate and graduate alumni who received their degrees 50 or more years ago. Join us to honor the Class of 1968 as its members join the Half Century Club on the occasion of their 50th Reunion.

Noon                  Check in and refreshments
12:15 p.m.           Program and induction of the Class of 1968
12:30 p.m.          Lunch

Tent, Athenaeum Lawn, 551 S. Hill Ave.
$30 alumni and guests, free for the members of the classes of ’48, ’53, ’58, '63, ’68

Discussion Forum: Engineering Democracy 4.0
Applied Political Technology: Review how networked Alums can advance regular web-based e-Voting on policy and budget priorities to surmount gridlock, dysfunction and factionalism. Transforming informed electoral mandates into actual governance outcomes. This drop-in discussion is sponsored by the Class of ’68 and open to all.

Alumni House, 345 S. Hill Ave. / Open to all
Questions or more information: Les Fettig ’68,

Computing and Mathematical Sciences 'Meeting of the Minds'
Join faculty, students, and researchers for a discussion and poster session of ongoing research from undergraduates, graduate students, and faculty that explores the concept of “CS + X”: disrupting science and engineering with computational thinking. Research presented will be wide-ranging, featuring the intersection of fields such as quantum computing, molecular programming, machine learning, big data, robotics, and autonomous systems. 

2:00 p.m.              Keynote Talk, 105 Annenberg
3:00 p.m.              Poster Reception, outdoor vicinity, north of building

Annenberg Building (auditorium and outdoor vicinity)

Undergraduate Admissions Office Campus Tour and Information Session
The best way to learn about Caltech today is to experience it firsthand. This campus tour offers an insider’s perspective on what makes Caltech unique—from its innovative curriculum and student traditions to its world-class faculty and legacy of pioneering research.

2:30 – 3:30 p.m. Tour
3:30 – 4:30 p.m. Information and Q&A Session

Undergraduate Admissions Office, 383 S. Hill Ave.
Questions: (626) 395-6341; please specify Reunion Weekend

Huntington Estate Tour
An easy outdoor one-hour walking tour that covers the central area of the estate including the world renowned galleries and gardens. Hear about current special exhibitions and learn how Henry and Arabella Huntington turned their San Marino Ranch into a world-famous cultural landmark.  Guests are welcome to stay and explore the gardens until closing

 1151 Oxford Rd, San Marino / $34

Torchbearer Social
Join us for appetizers and beer tasting while reminiscing with friends and colleagues.

 Athenaeum Rathskeller, 551 S. Hill Ave.

Applied Physics/Materials Science Laboratories Poster Session and Reception
Please join us for a reception with faculty and graduate students from Applied Physics and Materials Science. Tours will be available of our labs and facilities.
Lobby, Watson Laboratories

Caltech Fund Cocktail Party
Reconnect with your fellow alumni and meet the Class of 2018.  Enjoy delicious cocktails and appetizers, snap a photo in our fun photo booth and don’t miss out on your reunion class photo! Celebrating Caltech’s community of supporters, this reception is open to all.  

Class reunion photos will be taken during the party.  Schedule to follow.

Athenaeum Lawn, 551 S. Hill Ave. / Open to all

Reunion Dinners

Class of 1968 Buffet Dinner
Alumni House, 345 S. Hill Ave. /$60

Classes of 1973, 1978, 1983, 1988, 1993, 1998, 2003
Athenaeum, 551 S. Hill Ave. / $75

Class of 2008
Athenaeum, 551 S. Hill Ave. / Free for the members of the Class of ’08 and $75 for guests

 Class of 2013
Athenaeum, 551 S. Hill Ave. / Free for the members of the Class of ’13 and one guest

After Party @ Tom Mannion's
Join Tom Mannion and your fellow recent alumni (Classes of '93 - '17) and current seniors from the Class of 2018 for a late-night hangout with tasty bites and beverages.  Memorialize the evening in our photo booth!

Tom Mannion's House, 400 S. Hill Ave.            

Saturday, May 19

8:30 AM - 5:30 PM







10:00 AM - 12:00 PM

10:00 AM - 12:00 PM



11:30 AM - 12:30 PM
1:00 PM - 2:00 PM



12:00 - 2:00 PM

12:30 - 2:00 PM

12:30 - 2:00 PM

12:30 - 2:00 PM




1:00 PM & 1:30 PM


4:45 - 5:30 PM

5:00 - 8:00 PM

6:00 - 9:00 PM

7:00 PM - 10:00 PM




8:00 - 10:00 PM


8:00 PM - 12:00 AM

81st Annual Seminar Day
Caltech is at the forefront of pushing frontiers and venturing into uncharted territory – resulting in revolutionary contributions to science and society.  Hear from some of these radically inventive minds at this year’s Seminar Day when faculty from across all six divisions and JPL share their latest discoveries.

With over 18 different seminars to choose from – Seminar Day offers our alumni and friends the opportunity to immerse themselves in a full day of life-long learning. 

See our Seminar Day page for more information.

Caltech Campus

Caltech Seismological Laboratory Exhibit Center
Caltech, along with the U. S. Geological Survey, UC Berkeley, and the California Geological Survey, is coordinating earthquake monitoring efforts under the California Integrated Seismic Network (CISN).  We will display the project's exciting capabilities, including an internet-based, real-time ground-shaking map called ShakeMap used by critical users of earthquake information and demonstrate the earthquake early warning system currently under development, as well as, other ongoing research.

South Mudd, Seismo Lab Exhibit, First-Floor
The Media Center, Room 269

Science and SWEets: Family Activity
Join the Caltech Society of Women Engineers (SWE) in introducing your kids to the wonderful world of science.  From interactive demos to liquid-nitrogen ice cream, there are plenty of activities for all Techer families.  After all, does ice cream have an age limit?

 Beckman Mall, Tent

Linde + Robinson Laboratory for Global Environmental Science Tour
Renamed in honor of alumnus Ronald K. Linde (MS ’62, PhD ’64) and his wife, Maxine, the Linde + Robinson Laboratory for Global Environmental Science sets new standards in green design, with innovations from heating, cooling, and air-conditioning to a visionary repurposing of the historic solar telescope. Learn about the building’s unique features and the groundbreaking research taking place here.

60-minute tours depart from the Linde + Robinson East Patio, wheelchair access is via the north door

Sherman Fairchild Library Open House
Librarians will be discussing trends in scientific communication, digital publishing, and the changing role of the 21st-century research library.  Please stop by with your questions.

Sherman Fairchild Library

All Alumni Lunch
Join fellow alumni under the big tent for a boxed lunch or feel free to bring your own picnic and spread out a blanket on the lawn.

Beckman Mall, Tent / $15

Graduate Student Poster Session
Graduate students from across divisions and option will present research posters on their cutting-edge science.  Sponsored by the Graduate Student Council.

Beckman Institute, Outside Courtyard

Caltech Archives Open House   
Come explore Caltech’s history! We’ll be displaying letters, laboratory notebooks, and other papers of Caltech scientists and engineers like Millikan, Noyes, Hale, Morgan, Feynman, Richter, von Kármán, and Mead, as well as rare books dating back to the Scientific Revolution. We’ll also offer behind-the-scenes tours of our collection storage, and the opportunity to record an oral history for our collection about your own experience at Caltech.

Beckman Institute, Suite B215

The Joint Center for Artificial Photosynthesis (JCAP)
The Joint Center for Artificial Photosynthesis (JCAP) is the nation’s largest science-and-technology research program dedicated to the advancement of solar fuels. Established in 2010 as a U.S. Department of Energy (DOE) Energy Innovation Hub and led by Caltech, JCAP aims to find new and effective ways to produce fuels using only sunlight, water, and carbon dioxide. The center brings together world-class scientists and engineers under the roof of a newly renovated Jorgensen Laboratory building, outfitted with state-of-the-art facilities and instruments.

30-minute tours depart from the Jorgensen Lab lobby.  Participation is limited to 30 per tour, please sign up in advance.

SURF Reunion
Since 1979, more than 4,000 Caltech students have participated in the Summer Undergraduate Research Fellowship (SURF) program. If you were a SURFer, or are a friend of the program, please join us to reconnect with former classmates, chat with current SURF students, and learn about what’s new in undergraduate research at Caltech.

Parsons-Gates Lawn / Open to all

Page House Reunion
We’ll kick off with a wine and beer reception, followed by a 3-course meal (prepared and served by students) and the evening will culminate with stories from alumni and current students.

Page Courtyard / $25 dinner

Fleming House Reunion
ALRIGHT! Fellow Flems, come thunder with the herd once more and enjoy a good old-fashioned Fleming dinner. Throw napkins, hear the bell rung, and of course float some frosh! FBT.

6:00 p.m.              Reception
6:30 p.m.              Dinner

Fleming House / $50

Caltech LGBTQ+ Social
Join the Caltech Center for Diversity and the campus LGBTQ+ student organizations PRISM and oSTEM for an evening of cocktails, hors d’oeuvres, and intimate conversation. We will hold a short program highlighting this year’s achievements and the work of LGBTQ+ student organizations. Alumni, students, faculty, and friends are welcome to attend!

Alumni House, 345 S. Hill Ave.

Avery House Reunion
Averites are invited to our annual Avery House Reunion!  Enjoy food, music and the company of your fellow Averites–both current students and alumni.

Avery Library

Lloyd House Reunion
Lloyd dresses up for a snazzy night of casino games with alumni and students, and a fun auction at the end of the night. Additionally, there will be an open bar, live band, snacks and refreshments, and room to dance!

Lloyd House Lounge        

10:00 AM - 11:30 PM



12:00 - 2:00 PM





12:00 - 2:00 PM



12:00 - 2:00 PM



1:00 - 4:00 PM

2:00 - 5:00 PM


1:00 - 5:00 PM

2:00 - 5:00 PM

Sunday, May 20

Class of 1953 Farewell Breakfast
Join your 1953 classmates for a crepe breakfast and farewell hosted by Rolf (BS ’53, MS ’54) and Gunilla Hastrup

Home of Rolf and Gunilla Hastrup

Caltech Athletics Celebration
Celebrate and commemorate the rich history of intercollegiate athletics at Caltech as we celebrate the achievements of our 2017-2018 scholar-athletes and induct the fifth class into our Hall of Honor. Learn more at:

Eagle Jones '01
Alexis Johnson '98
Michael Keating '88
Randolph 'Randy' Lewis '72
John Walsh '60
1949 SCIAC Champion Men's Tennis Team
Coach William "Fox" Stanton - Track & Field, Cross Country, Football

Ramo Auditorium / Free, no registration required

Caltech Y Lunch
Open to all alumni who have fond memories of the Y and want to get updated on current activities. Stop by to enjoy good food, chat with friends, and share your favorite Y memory.

Caltech Y Offices, 505 Wilson Ave., directly north of the Caltech Credit Union
Questions: (626) 395-6163;

Caltech Alumni of Color Luncheon
The Black Ladies Association of Caltech and the Caltech Center for Diversity would like to invite all alumni of color to join us for a luncheon.  Sponsored by BLAC (Black Ladies Association of Caltech).

Alumni House, 345 S. Hill Ave.

Dabney House Reunion
Join your fellow Darbs for light snacks, refreshments and games.

Dabney House Courtyard

Blacker House Reunion
An afternoon to enjoy tea, hors d’ oeuvres, and conversation with alumni and current students.

Blacker House

Ricketts House Reunion
Beer and Brats will be returning again this year! The name says it all; come enjoy a House barbeque, complete with a kiddie pool (vegetarian food and non-alcoholic beverages will also be available).

Ricketts Courtyard

Ruddock House Reunion
Ruddock House Reunion is always a great time! Rudds and their families come together to reminisce with their classmates, contemporaries, and current students about their time in Ruddock and at Caltech. Join us for food, stories, and fun.

Tom Mannion’s House, 400 S. Hill Ave.