Once seen as a bit of an eyesore, this sculpture has become a staple of downtown Houston.

The largest underground pedestrian tunnel system in the U.S. mostly caters to the people working in the offices above, but provides a great, air-conditioned way to traverse the city.

A tiny town’s tiny museum with some gigantic residents.

See 150 million-year-old dinosaur tracks and bones dating back to the Jurassic period.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

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

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

This small museum is home to some of the oldest and best-preserved dinosaur specimens found in Montana.

A sprawling museum located on the former site of the Orphan Girl Mine.

One of the last socialist halls still standing in the United States.

A smoke stack so large, the Washington Monument could fit inside!

Modeled after a famous church in Vienna, Austria—but in Helena, Montana.

Touch an actual dinosaur bone at this eclectic trove of Rocky Mountain treasures.

New fungal and bacterial species call this deadly lake home.

Spectacular views await visitors to this lake.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

The world's largest Holstein cow.

A true roadside icon standing on the same plains that the herds once roamed.

Three legendary, living albino buffalo roaming their pastures for all to see.

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.

Designed by Alfred Caldwel, this landscape showcases his vision of a native garden.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

The watery grave of an impractical idea.