An abstract monument to a symphonic composer.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

A subterranean house of worship carved right out of the bedrock.

Alexander Hamilton’s creation caused quite a bit of controversy.

These free-roaming horses were once destined to disappear from the land.

Long before guestbooks and hotels, frontier travelers signed their names on this rock face.

The first declared National Monument in the United States.

A relic of roadside lore and perhaps the first of its kind in North America.

A ghost town now swarming with dozens of prairie dogs.

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

A rancher expanding a natural spring for his cattle came up with bones – lots and lots of them.

Otherworldly rock formations and ancient fossils abound in this unique stretch of Nebraska badlands.

This small hill features the most notable collection of petroglyphs in Saguaro National Park.

John Wayne, Ronald Reagan, and other Hollywood actors have resided in this picturesque Route 66 hotel.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Before its closure in 2002, this South Dakota mine was the largest and deepest gold mine in Western Hemisphere.

This soaring sculpture and Sioux Falls landmark represents the leap of faith taken to make one's dreams come true.

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

This replica stave church looks like a piece of Norway was simply plopped down in South Dakota.

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

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

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

Spectacular views await visitors to this lake.