Go inside to really appreciate this 500-year-old technological masterpiece.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

Where Venice's gondolas go for a tune-up.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The only museum with its curator—and her pets—buried inside.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

This cathedral's stained-glass patchwork of psychedelic colors and shapes was put in place long before the swinging 60s.

This astronomical clock is the second oldest in England.

The house in the middle of the motorway.

The fifth-longest natural arch in the world, and the longest outside China.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Home to the deepest rift anywhere on Earth.

A massive sea stack famous for its appearance in The Goonies.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The longest living non-clonal organisms on Earth.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Canyon walls shrouded in ferns.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

A massive volcanic plug is now a protected area that hosts a number of bird species.

This massive redwood tree has a hole in the base big enough to drive through.

This bridge provides safe passage for squirrels.

An homage to everyone's favorite prehistoric cartoon family.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Dozens of feral felines rule a segment of Hollywood's only graveyard.