Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

A small store filled with animal skulls and other curiosities.

A beautiful combination of living flora with preserved bones covers the shelves of this shop.

This super steep hike ascends 2,000 feet in less than a mile.

This spectacular track has run continuously since 1882.

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

Dramatic river bend surrounds a natural red-rocked pedestal.

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

The rusted creatures wait to be discovered in Prague's botanical garden.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

Countless grotesque faces stare out from this eerie Prague art wall.

Anatomical cabinet holds unexpected treasures.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

Giant, pink stuffed rabbit on an Italian mountain.

David Sedaris called it "The greatest shop in the world."