• June 8 – Union League of Philadelphia
  • Announcing Our 2016 Award Winners
  • Architecture Walking Tours
  • Paul Steinke Named Executive Director of the Preservation Alliance
  • Join the Alliance Today!<br />
  • Put Preservation on the Fast Track.

Become a Cornerstone Society Member Today

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Explore-PhiladelphiaDiscover Historic Philadelphia

Explore the city with our interactive map of historic sites. Search the Philadelphia Register, National Register, and more!

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Achievement-AwardsPreservation Achievement Awards

Learn more about the best preservation projects of 2016, and register today for this year’s awards event, held on June 8th at the Union League!

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MembershipBecome a Member

Your support is crucial to our mission! Memberships start at just $25. Join or renew today.

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EventsUpcoming Events

Start planning a preservation-filled 2015! View our calender for a winter season of special events.

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