West Point’s only monument to a woman veteran stands above an empty grave.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

This sidewalk tribute honors Colorado's great culinary creation.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

This now-abandoned outcrop is an important Native American spiritual site, overtaken by European settlers and mining pollution.

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

Inside this casino, visitors are treated to slot machines and a rare German Christmas pyramid.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

America's first federal monument.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

Also known as the Founding Church of Scientology.

The first memorial dedicated solely to the Black troops who fought for the Union.

A historic neighborhood church is reborn as a psychedelic arts collective.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

Yo, Adrian!

The U.S. Fish Commission’s effort to mass produce carp.

A huge musical instrument played by the ocean.

This unassuming passageway played a key role in one of the most important events in U.S. history.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

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

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.