A downtown park built on top of unclaimed graves.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

A multiversal transit station located right below a highway interchange.

This iconic science fiction house still looks like something from the future.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

A Colorado store that specializes in all things spiritual, metaphysical, and witchy.

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

This open-air reconstruction of an Old West town, a cross between a theme park and a museum, provides an immersive historical experience.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Take a dip in the world's largest mineral hot springs pool.

A house carved into a rock in the 1940s.

For over a century, it has been a tradition to raise a flag at the top of this 450-foot sandstone pillar on the 4th of July.

Over 600 vacuum cleaners stack the shelves of what may be the cleanest museum in America.

Giant granite rocks standing end-to-end like a train of circus elephants.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

Less a museum than a bizarre fantasy world created by artists and engineers.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Hundreds of graffiti artists have decorated this flood-wall on the west bank of the Mississippi River.