A cave's rare beauty held a cavernous secret hidden underground.

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

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

Explore a misty river canyon from a metal bridge system.

A riverside tiny house with books and other treasures galore.

A short but powerful waterfall resides amid Colorado’s Great Sand Dunes.

A vibrant colony of rescued wolves and other canids.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

This bird-shaped rock formation defies gravity, time, and classification.

A frozen oasis lies beneath the scorching New Mexico desert.

This popular pitstop lives up to its name.

During the solar phenomenon "Lahaina Noon" this bendy, curvy sculpture forms a perfectly circular shadow on the ground.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

A series of waterfalls and pools that flow through the 'Ohe'o Gulch and into the ocean.

A library of rare occult books in Los Angeles.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This waterfall is one of the most spectacular natural features in the Scottish Lowlands.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

The history of radiation is on safe display at the foot of a radiation science laboratory.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

Paris' linguistic guide to the international language of, yes, love.