Cold War missile launch site which has been converted to a public park.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

Amazing pre-Civil War ruins alongside a shallow, rocky river that hosts beautiful (but endangered) lilies.

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

This botanical garden outside Chicago boasts an array of more than 300 varieties of lilacs.

People escaping slavery passed through the oldest house in Lombard, Illinois on their northbound journey to freedom.

Museum dedicated to the art of cutting and polishing stones.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

A psychedelic labyrinth on the San Francisco bay.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

This unusual building straddles two countries.

A self-proclaimed libertarian micro-state on a tiny bit of disputed territory between Serbia and Croatia.

A small part of Russia that does not touch any other part of Russia.

An unrecognized nation-state created in the 1820s to avoid taxes.

Every weekend, people gather here for a brief chance to see their loved ones on the other side of the United States–Mexico border.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Dramatic river bend surrounds a natural red-rocked pedestal.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.