Plan Your Visit

Chemical Heritage Foundation
315 Chestnut Street
Philadelphia, PA 19106-2702
Tel: 215.925.2222 • Fax: 215.925.1954

Public Tours of the Museum at CHF

10:00 a.m.–5:00 p.m. Monday–Friday
10:00 a.m.–8:00 p.m. First Friday of the month (March–December)

Use of the Othmer Library

10:00 a.m.–4:00 p.m. Monday–Friday

  • Researchers are asked to contact staff to make an appointment in advance of a visit to the library. Please fill out an appointment request form or call 215.873.8205. A photo ID is required upon arrival.


When planning your visit to the museum or library of the Chemical Heritage Foundation, please note that CHF will be closed on the following days:

  • New Year’s Day
    January 1, 2015
  • Martin Luther King Day (library closed, museum open)
    January 19, 2015
  • Presidents’ Day (library closed, museum open)
    February 16, 2015
  • Memorial Day weekend 
    May 23–25, 2015
  • Independence Day weekend 
    July 3–5, 2015
  • Labor Day weekend 
    September 57, 2015
  • Papal Visit
    September 25–28, 2015
  • Thanksgiving Day and the day after 
    November 26–27, 2015
  • Christmas Eve and Christmas Day 
    December 24–25, 2015

Wheelchair Access

A wheelchair-accessible pedestrian gate is available at our parking lot entrance on 3rd Street, between Chestnut and Market streets. The pedestrian gate is unlocked during regular business hours and for events. If you’re traveling by car, drive up to the parking lot gate, which will open automatically during regular business hours and events. You may park in any open spot marked “Visitor” or in one of two handicapped spots. To enter the building, call our receptionist via the intercom at the East Entrance for Visitors and Staff.

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Annual Report

Annual Report
Take a look back at a year of preservation, research, and outreach in CHF’s annual report to donors.