Entering 1933 Shanghai is like standing in a black-and-white sketch by M. C. Escher. The 1933 is a crude building with bare, gray concrete walls that houses a few restaurants and boutiques. At the heart of the building is a labyrinth of spiral staircases and free-floating bridges that wind upward to a bright atrium. The architecture will hypnotize you. One of the building’s creepier attributes may be the fact that it was once the most famous slaughterhouse in Asia, dating back to 1933.