On what would normally be a long, anonymous block next to Central Park, the American Museum of Natural History stands as a massive, immovable block of impressive stone. Filling the majority of Theodore Roosevelt Park, the museum is visible from just about every spot between 81st and 77th Streets.
The northern half of the park is home to the Hayden Planetarium (which isn't to be confused with Hayden Panettiere), which has been around since the 1930's, but has only recently gained notoriety for its large, globe-shaped theater.
There's a handful of entrances to the 81st Street Subway station here, which itself is decorated with faux fossils and bones all along the walls. The southern-most stairway is adorned with some very nice lamp poles with "Subway" delicately painted on. They appear to be designed to match the rest of the lamps that run along the front of the museum.