Contact Information

Fort Mason Local Map

The Long Now Foundation

Fort Mason Center
Landmark Building A
San Francisco, CA - 94123

Public Hours:
Monday - Friday: 10:30am to 5:00pm
Saturday - Sunday 11:00am to 6:00pm

The Museum and Store will be closed on Saturday, July 26.

Voice 415.561.6582
Fax 415.561.6297
Email services@longnow.org