When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Five candy-colored villages on the Italian Riviera.

Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

This ancient theater was once the home of fierce gladiatorial battles.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

The world's tallest bridge is also possibly the most elegant.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

These quaint French houses dangle precariously over a precipice.

Budapest's Communist-era statues, banished to the suburbs.

Once the home of a hermetic monk, this cave now houses a small church.

The largest 19th century panorama in the world still in-situ.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

This quaint Hungarian railway system is operated exclusively by children between the ages of 10 and 14.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A glacier pocked with ice caves and surrounded by rainforests.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.