The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

You'll find just about anything in this funky Tbilisi flea market.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

A brilliant turquoise lake in the mountains.

The fishing boats that moor in this small lagoon enter and leave through a tunnel to the sea.

This spectacular dome managed to survive after being bombed in World War II, in an event known as the "Miracle of Mosta."

The remains of a 1st-century aristocratic Roman town house featuring beautiful well-preserved mosaics.

This subterranean necropolis holds three floors of antler-dug grave caves.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

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

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

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

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

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

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

Eastern Bloc nostalgia, anybody?

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

A fountain standing as a testament to a doomed alliance.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.