Quite simply the largest tree in the world (by volume).

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Partially collapsed lava tube and cave system complete with concert hall, underground pond, and unique albino crabs.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Famously misunderstood wonder of the ancient world

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Golden Gate Park's historic collection of plants.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The most visited, and possibly most controversial, museum in Germany.

2300-year-old Roman road connecting the empire.

Incredible labyrinth of man made caves.

Southern Italy's spinning top village.

The plague quarantine island home to the alleged "Vampire of Venice."

A monument celebrating the idea of reaching inaccessible places.

Baroque celebration of the end of the Great Plague of Vienna.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Meet manatees face-to-face at this zoo for native species.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Most-visited and most-photographed slot canyon in the American Southwest.

The final resting place for the remains of 143 Habsburg royalty.

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