Ruins of a German Castle on top of a towering stone pillar.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Where beautiful signs live on forever.

A deadly ancient portal to the underworld.

Seaside ruins of a settlement that date back to the first century B.C.

This three-chambered cave is the only protected natural bat hibernaculum in Quebec.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

Over 12,000 hygiene oriented objects and exhibits.

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

Visitors dip into a variety of pools of what was once ice.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

Malaysia's first and only glass temple.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

Rustic natural hot springs in the deciduous rain forest.

Steaming blood-red hot spring from hell.

Collection of vintage trailers double as hotel rooms.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Unique geological formations in China, featuring some suggestive shapes.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

A fifth-century temple improbably built into the side of a cliff.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

A natural gas leak provides a flickering flame beneath a waterfall.