The first park built over a freeway is a brutalist masterwork.

The little-known second castle that William the Conqueror built in York.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

The grave of a champion Thoroughbred hides within the former presidential estate.

One of the last active volcanoes on the Eastern seaboard.

The only recreation of William Shakespeare's indoor playhouse.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Interactive modern and vintage submarine equipment, World War II relics, and submarine attire.

A small town garden is dedicated to a psychic dog with the most soulful eyes.

The man who was president for only one day and spent most of it asleep.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

The fastest mail service in the west is tracked and memorialized along this 1,400 mile trail.

This historic Victorian hotel has a scandalous history of affairs and murder.

A fitting attraction for the corn capital of the world.

A striking sculpture built to honor the women of the Lakota and Dakota Nations.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Every president in history is immortalized in bronze in downtown Rapid City.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

One of America’s oldest and spookiest hotels, thanks to the residency of ghosts, dead presidents, and Alfred Hitchcock.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Just a man taking his prehistoric pet for a stroll.

The first declared National Monument in the United States.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.