An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.

These markers are used to document elevation changes around the famed dam.

A 50-year old dive bar that has its own yacht club.

Every summer West Seattle experiences a housing bloom.

This popular bar has been blurring the line between normal and edgy for more than 75 years.

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

A spectacular overlook of the Little Grand Canyon of the San Rafael River, a deep sandstone gorge streaked with orange, red and white in a remote, uncrowded part of Utah.

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

There’s a hidden military meme engraved on the World War II Memorial.

The only place for a truly presidential dram.

This lava formation earned its whimsical name from the log-like formation of it stones.

This Moab institution functions as both a rock store and a small natural history museum.

This now-abandoned part of the original transcontinental railroad route provides a surreal driving and historical experience.

Sloth rehabilitation center in the jungle of Costa Rica.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

This museum glorifies the humble potato.

In the heart of Brigham Young's promised land sits a festering plot of industrial ruin that has been claimed by society's outcasts.

Almost all that remains of a town dedicated to supporting the First Transcontinental Railroad.

The extensive collection of an amateur naturalist.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Kay Andrews's recipe was so good, her family immortalized it in stone.

An empty mine that some believe will suddenly be filled with fortune and treasures at the end of the world.

Incredible sculptures inspired by obscure passages from the Bible.