El Ateneo Grand Splendid

A 1919 theater in Recoleta converted into a bookshop — and routinely named among the most beautiful bookstores in the world. The frescoed dome survives overhead, the gilded theater boxes are now reading nooks, and a café occupies the former stage, framed by its original crimson curtains. Books fill what were once stalls and balconies, so that browsing becomes a kind of theatergoing. For visitors, it's an essential Buenos Aires sight: a grand old playhouse given a second life that honors rather than erases its origins, and a reading room unlike any other on earth.