An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Perhaps the most scandalous statue of America's first president.

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

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

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

The national park was once a plantation estate.

There’s a hidden military meme engraved on the World War II Memorial.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

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

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

This roadside stand packs 300-plus varieties of tomatoes, from "Maiden's Fire" to "Kaleidoscopic Jewel."

Don't get it twisted: This is the oldest pretzel bakery in the United States.

The lost town of Neversink, sunk by New York City.

FDR's Art Deco hospital tower was hopelessly inefficient.

The oldest farmer's market in America is so ancient it was approved by the King of England.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

Oldest existing wire suspension bridge in the United States.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

Giant busts of 42 U.S. presidents are sitting in a field in Virginia.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The celebrated eyesore created by starry-eyed sweethearts.