The site of the climactic scene from the classic horror film is now a historic landmark.

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

Obscure Freemasons still live in D.C.’s largest private residence.

FDR's Art Deco hospital tower was hopelessly inefficient.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

Every drop of D.C. tap water flows through this old waterworks.

The span is crooked and made from two older recycled bridges.

The most accurate timepiece in the world.

A painfully obvious spy house sits right across the street from the Russian Embassy.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

There’s a special club house at the top for the bell ringers.