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Explore the new Old Post Office Building, whose early 20th-century design has been adaptively reused into a beautiful, modern Class A Office building.

1.5 Hours
$15 Public
$5 Basic Members
Free for Deco Members and above
The Old Post Office Building; meet inside the Van Buren entrance

It once looked as though the stunning architectural details of Chicago's Old Post Office would be lost to time while the building sat vacant for almost two decades. But the 2.8 million square foot building, completed in 1934, recently went through a monumental renovation and now serves as a modern multi-use event and office space that meets today's need for large, light-filled work spaces.

See how historic artifacts and building details have been creatively incorporated into the Old Post Office's design including the conversion of the roof to a 3.5 acre urban rooftop park. Old places can become new spaces when a developer with vision collaborates with an award-winning architectural team.


  • Accessibility: The tour route requires slightly less than a mile of walking and requires use of an escalator or elevator.
  • Many tours sell out. To guarantee your space advance reservations are strongly recommended.
  • Your safety is our priority. The itinerary of this tour may be altered in accordance with health and safety policies and considerations.
  • Ticket price includes entrance to the Chicago Architecture Center within 7 days of your tour. View the CAC's hours.

Upcoming The Old Post Office Tours