Built as Chrysler Corporation headquarters in 1930 (they moved out decades ago), this is perhaps the 20th century's most romantic architectural achievement, especially at night, when the lights in its triangular openings play off its steely crown. As you admire its facade, be sure to note the gargoyles reaching out from the upper floors, looking for all the world like streamline-Gothic hood ornaments.

There's a fascinating tale behind this building. While it was under construction, its architect, William Van Alen, hid his final plans for the spire that now tops it. Working at a furious pace in the last days of construction, the workers assembled in secrecy the elegant pointy top -- and then they raised it right through what people had assumed was going to be the roof, and for a brief moment it was the world's tallest building (a distinction stolen by the Empire State Building only a few months later). Its exterior chrome sculptures are magnificent and spooky. The observation deck closed long ago, but you can visit its lavish ground-floor interior, which is Art Deco to the max. The ceiling mural depicting airplanes and other early marvels of the first decades of the 20th century evince the bright promise of technology. The elevators are works of art, masterfully covered in exotic woods (especially note the lotus-shaped marquetry on the doors).