From downtown’s soaring steel and glass skyscrapers to the iconic residential greystone, there are impressive, beautiful, and revolutionary buildings practically everywhere you look. Each fall, the Chicago Architecture Center celebrates the city’s many architectural treasures both big and small with Open House Chicago, the two-day festival which lets opens many of these buildings for the public to explore for free!

Chicago is world-renowned for its architecture. Take a walk around the city, and chances are that you’ll encounter at least a few fantastic buildings. But did you know that Chicago’s architectural legacy has inspired music, too?

Concert halls today are so architecturally innovative that the buildings themselves draw visitors. The venues on this list are so spectacular, they’ll be sure to have you checking to see just how many more vacation days you have left.

BERLIN (AP) — Hamburg’s spectacular new Elbphilharmonie concert hall finally hosted its first concert on Wednesday night, several years behind schedule and far over the original budget. President Joachim Gauck and Chancellor Angela Merkel were among the guests at the maiden concert that was conducted by Thomas Hengelbrock. The NDR Elbphilharmonie Orchester is playing music from the renaissance to the …