435 North Michigan Avenue

  • Interior: Conference room, formerly office of Tribune editor and publisher Robert R. McCormick. Detail: Fireplace.

  • Interior: Conference room, formerly office of Tribune editor and publisher Robert R. McCormick. Detail: Bookshelf.

  • Interior: Conference room, formerly office of Tribune editor and publisher Robert R. McCormick. Detail: Two views of hidden conference room door, shown open and shut.

  • Interior: Conference room, formerly office of Tribune editor and publisher Robert R. McCormick. Ceiling detail.

  • Interior: Conference room, formerly office of Tribune editor and publisher Robert R. McCormick. View of McCormick's desk.

  • Interior: Conference room, formerly office of Tribune editor and publisher Robert R. McCormick. View of Wrigley Building and Chicago River from window.

  • Interior: Tribune Company Boardroom, later secretary's quarters. Detail of vaulted mahogany ceiling.

  • Interior: Tribune Company Boardroom, later secretary's quarters. Detail of vaulted mahogany ceiling.

  • Interior: Tribune Company Boardroom, later secretary's quarters. Detail of vaulted mahogany ceiling.

  • Exterior: Observation Deck

  • Exterior: Observation Deck

  • Exterior: Observation Deck

  • Exterior: Observation Deck

  • Exterior: Observation Deck

  • Interior

  • Interior

  • Interior

  • Exterior: Observation Deck

  • Exterior: View of Chicago River and Skyline, including Wrigley Building, from Observation Deck

  • Interior: Machine Room, formerly Tribune Museum.

  • Interior: Machine Room, formerly Tribune Museum.

  • Interior: Machine Room, formerly Tribune Museum.

  • Exterior: Main Entrance

  • Exterior: Main Entrance, detail of monumental stone screen.

  • Exterior: Main Entrance, detail of monumental stone screen.

  • Exterior view of main entrance portal

  • One of nearly 150 architectural fragments embedded in the first-story wall: Royal Castle, Stockholm, Sweden

  • One of nearly 150 architectural fragments embedded in the first-story wall: Royal Castle, Ancient Temple Honan Provence China

  • One of nearly 150 architectural fragments sembedded in the first-story wall: Old General Post Office Dublin