Wanamaker's

 This is Wanamaker's (now a Macy's) in Philadelphia. It is a true retail temple, built in 1910.

John Wanamaker, a native Philadelphian, invented the concept of the department store (including the use of price tags!).

 This is the world's largest (working) organ. In a department store!

The store is jaw-dropping...I can only imagine what shoppers thought when they entered the doors of this magnificent building more than 100 years ago.