Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

A unique hanging cable-car navigates through Dresden, the oldest suspension railway in the world.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

When the rain falls, this drain system turns into a musical instrument.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A unique underground structure dating back to the 1st century BC.

Stalactites and stalagmites in a beautifully lit cave.

Twisted buildings adorn the banks of the Rhine river.

Breathtaking and huge 430 year old maps of Italy.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Mount Nyiragongo has erupted at least 34 times since 1882 and is home to the world's largest lava lake.

The sign at the garden gate reads: "These Plants Can Kill."

These "anatomical machines" are only one of the many strange items in this Italian crypt.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

An antique curios dealer and hybrid taxidermist.

These spooky and unusual stone formations create an underworldly landscape.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

A huge stone pyramid built for fun.

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