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Masks are preferred for all museum visitors.
For more information, please visit our COVID-19 Information page.

Plan your visit to our museum, library, and conference center, located in the heart of Philadelphia’s historic district.

Science History Institute
315 Chestnut Street
Philadelphia, PA 19106-2702
Tel: 215.925.2222


Hours: Wednesday–Saturday | 10am–5pm

Plan your visit >>
Take a journey through the weird and wonderful world of matter and materials. Visit our museum and discover the science in your life!

Othmer Library

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.

Conference Center

Host an event >>
Perfect for meetings, conferences, holiday parties, and much more, our conference center can accommodate events for up to 300 people.


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.

Wheelchair Access

Accessibility >>
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.