The Science History Institute’s Othmer Library and museum are temporarily closed. The library will reopen Monday, January 31, 2022, and the museum will reopen Thursday, February 3, 2022. The conference center remains open for event rentals.
PLEASE NOTE: Masks are required inside our building. Learn more on our COVID Information page.
Science History Institute
315 Chestnut Street
Philadelphia, PA 19106-2702
Hours: Thursday–Saturday | 10:00 a.m.–5:00 p.m.
Plan your trip >>
Take a journey through the weird and wonderful world of matter and materials. Visit our museum and discover the science in your life!
Schedule an appointment >>
An independent research library encompassing the history of chemistry and related sciences and industries, the Othmer Library houses over 140,000 print volumes, rare books and manuscripts, archival materials, and historical photographs.
Getting here >>
Our Old City Philadelphia location is within easy reach of Interstates 95 and 76, Amtrak’s 30th Street Station, the Philadelphia International Airport, and public transportation.
A wheelchair-accessible pedestrian gate is available at our parking-lot entrance on 3rd Street, between Chestnut and Market Streets.
Stay overnight >>
Our building is conveniently located within close walking distance of several hotels in one of Philly’s most vibrant neighborhoods.
Get more ideas on what to do in Philly from KAYAK’s Philadelphia Travel Guide.