Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Double spiral staircases are not unheard of, but they are very rare.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

An unusual cave filled with rare alien-looking aragonite formations.

Too much gossip or just missing curfew could land you in here for a couple of days.

After 11 years of reconstruction work, Slovakia's finest hilltop chapel complex is finally reopen to the public.

A whimsical bridge adorned with decorative dragons.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

This historic black and white monastery is one of Bulgaria's architectural jewels.

"Holy Wisdom" overlooks the city that became its namesake.

Sofia's legislative center is continuously reinventing itself.

A striking symbol of the Bulgarian capital.

A magnificent collection of imperial armor and weaponry.

Dine amidst exotic plants at this former royal greenhouse.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

The profile of one ill-fated deacon was emblazoned forever on this church window during the Halifax explosion.

The final resting place of 121 victims of the RMS Titanic, 42 of which may never be identified.

This historic cemetery stopped accepting bodies before many Canadian cities were founded.

A morbid piece of memorabilia from the most famous shipwreck in current history is just one of the many poignant artifacts in this Canadian museum's collection.

This Canadian monument to the man who invented the telephone allows visitors to get up close and personal with the artifacts of his life.