Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

This sidewalk tribute honors Colorado's great culinary creation.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

This railroad and oil tycoon's lavish estate now stands as a time capsule of the Gilded Age.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

This small Key West museum is packed with dozens of artifacts that illustrate the life of the iconic playwright.

The island residents are known for taking their quirky sense of humor with them to the grave.

The world's largest anatomically accurate brain sculpture.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

One street divides a single town that stands in two U.S. states.

Architectural monsters are devouring this palace's every door and window.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

This grand gothic brewery has been pumping out suds for over a hundred years.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

An overlooked memorial honoring the local Washington residents who died in World War I.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

The rogue roots are gradually consuming some of the historic marble grave markers.