A downtown park built on top of unclaimed graves.

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

This sidewalk tribute honors Colorado's great culinary creation.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

New fungal and bacterial species call this deadly lake home.

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

A classic carnival ride that was carved to be untouchable.

Spectacular views await visitors to this lake.

The only road through the heart of Glacier National Park.

This record-setting hydraulic dam in the Montana badlands was one of FDR's most ambitious public works.

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

Massive still life just off the highway in Kansas.

A fitting attraction for the corn capital of the world.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

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

At the time of its completion, it was the tallest dam in the world.

An unusual geological feature towers over the remains of a dark episode in United States history.

Native Americans built this circle of stones, which was used to predict astronomical events.

This erect, phallic geological spire wasn't always named so domestically.

An experimental, automotive replica of Stonehenge.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

America's largest man-made forest was planted in an effort to bring back the past.

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