Liberty Place is most beautiful building in the  Philadelphia, Pennsylvania, United States.(source)

Building Name- Liberty Place
Building Type- Commercial offices
               Residential
               Hotel
               Retail
Location- Philadelphia, Pennsylvania
Construction Completed-
phase 1: 1987
phase 2: 1990
Height-
Architectural-
phase1: 945 feet (288 m)
phase2: 848 feet (258 m)
Top floor-
Phase 1: 784 feet (239 m)
No of Floors-
phase 1:61
phase 2:58
No of Lifts-
phase 2:24
Architect- Helmut Jahn