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

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.

This beloved marketplace mascot poops money and grants good luck.

This elaborate towering structure was once famed for its revolutionary height.

Huge masonic hall in Philadelphia with lavishly themed rooms.

The first American department store, and home to the largest operating musical instrument in the world.

A whopping 14,000 copper coins cover this miniature fighter jet.

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

These abandoned waterworks are crumbling into the Potomac River.

This one-room cabin where the young colonel slept during the French and Indian War.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

The world's largest anatomically accurate brain sculpture.

The world's largest collection of mechanical puzzles is a cornucopia of analog bafflers.

Ornate limestone building now filled with geologic specimens, and more.

A lesser-known part of the Kinsey Institute is this impressive collection of art, artifacts, and material culture related to human sexuality.

Where hikers on the Tecumseh Trail can exchange a dirty sock for a free geode.