A tunnel of hardened lava along Maui’s famous Road to Hana.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

A beach made of semi-precious green sand on the Big Island of Hawai'i.

The famous aviator's final resting place is a study in natural beauty.

Sniff the Titan Arum's rotting flesh.

A stunning Victorian abbey and walled garden on a lakefront.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

Tens of thousands of ancient rock carvings hidden in the heart of a French national park.

France's high-tech, future-themed amusement park.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

The post-apocalyptic remnants of a bucolic town ruined by a plane crash.

Since ancient times these picturesque springs have been providing bathers with healing waters.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

A French valley with forests so lush it was nicknamed "the Small Amazonia of the Pyrenees."

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

The fantastic architectural models of a French traveler.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

An icy lake tucked among jaw-dropping alpine panoramas.

Ancient paintings known as the "Sistine Chapel of Cave Art."

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

Abandoned medieval hill town.

This 16th-century monastery has been turned into a surrealist architecture compound.

This community on a small Venetian island has taken to painting their houses in bright neon hues.