The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

A medieval church built up to defend its village.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Perhaps the only one of its kind, the nearly-forgotten site once held mortal (and rigged) gladiatorial games between tigers and imperial war elephants.

This candy-pink cathedral of Da Nang is also known as the Chicken Church.

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

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

Located off a bustling strip, a silent teahouse employs workers with hearing- or speech-related disabilities.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

In the 1940s, Italian architect Mario Cavallè built a dozen of these round homes in northern Milan.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

This poignant art installation raises awareness of violence against women.

See what remains of a once grand ancient Roman circus.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

Da Vinci's equestrian statue, 500 years in the making.

An ode to the washerwomen who called Pavia home.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

Ethiopia's "smoking mountain" is in one of the hottest regions on the planet and is home to two lava lakes.

The Earth's saltiest natural body of water belches toxic gas.

The hottest place on the planet.