The great American road trip, but smaller.

The final resting place of a space program monolith.

The largest whale museum in Europe allows visitors to walk among life-size giants.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

An encyclopedic collection of mammal penises.

Walk in the footsteps of the gods and straddle two tectonic plates.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Rising from the sea like a stone monster.

You can cross from one country to another in a single hop on this little bridge.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

Perhaps the most spectacular grotto along the Algarve coastline.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

Houses are tucked between, on, and underneath giant boulders.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

Largest site of dinosaur footprints ever found includes more than 5,000 tracks.

These mysterious 1,000-year-old walls have revealed little about their past.

In this African village, the walls of the chief's compound are painted with beautiful traditional designs.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

A massive underwater sinkhole made famous by Jacques Cousteau.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

An active seahorse farm is currently saving Tasmania's handfish from extinction.

The world's brightest bioluminescent bay.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.