Unexplained bald patches in the landscape grow and recede over time, as though they are somehow alive.

Half of a waterfall goes into the river while the other half seems to disappear.

A lake formed in the basin of a massive impact crater takes the shape of an unbroken ring when viewed from above.

The second-deepest known cave on Earth, hidden in an extremely remote mountain region.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

A store that sells all manner of bones, insects, and animal curiosities.

An Amazonian hotel is the ultimate treehouse and provides stilt based accommodation.

Fine dining in the bizarre world of Lewis Carroll.

Trash escaped from a landfill to fill beaches with all kinds of treasure.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

On Japan's Tashirojima Island, cats are king.

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

The first island in the world designated a light-pollution-free astronomical observation point.

Aqua white sand highlighted with fiery red rocks.

These spooky and unusual stone formations create an underworldly landscape.

Geological storytelling.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

Volcanic irregularity? Odd erosion? Alien eggs? Local legends compete to explain these strange orbs.

An eccentric company offers eccentric millionaires the opportunity to have spaceflight-related experiences.

The first declared National Monument in the United States.

Eccentric stone cairns built on a public New York City beach.

View the California coastline (and the home of Barbara Streisand) inch by inch with stunning, government-sanctioned aerial photography.