You'll find this spellbinding bookstore, El Ateneo, in Buenos Aires. Previously known as Teatro Gran Splendid, the building was finished in 1919. Books can be found in every possible inch of the building, save for the box seats, which are used as reading rooms.
Over a million people pass through the 21,000 square foot building every year. We can't help but wonder how many kids get lost in this place every week.