The world's shortest funicular ferries beachgoers a whopping 128 feet from clifftop to shore.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

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

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

A former major munitions plant that has been converted into a sprawling art space.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

A monumental statue of RCA's mascot now sits atop a historical society roof after a life of moving around.

Walk through the history of American pop culture.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

The Decoy Capital of the World.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

The United States' oldest Episcopal church still in active use.

No one knows who's responsible for decorating this tunnel with stuffed animals, but the people love it enough to protest their removal.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

Steepest flood safety railway in the entire world.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.