The ruins of Theodore Roosevelt's beloved ranch stand in a forgotten corner of a national park named after him.

The world's tallest turtle riding the world's largest snowmobile.

This park straddling the United States-Canadian border has been a symbol of peace since 1932.

A rim-made reptile in North Dakota.

The remnants of an early American attempt at missile defense.

Part of a secret 1970s nuclear defense program is now open to the public.

This sky-high radio mast is formerly the tallest man-made structure in the world.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

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

This municipal park along the Missouri River honors the galley central to the Lewis & Clark Expedition with a replica ship and sculptures.

The world's largest Holstein cow.

A replica of a fort built from a frontier town's mass hysteria in the face of false reports of impending Native American violence.

This hollowed salt dome is the largest oil storage facility in the world, hoarding 250 million barrels of crude oil.

This enigmatic building features numerous architectural styles.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.