Pilgrimage site for star-crossed lovers.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

This legendary urban waterfall creates a dazzling display of rainbows.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

You'll find the little birds tucked within the rocks of this Australian beach.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

This extraordinary geological oddity resembles human-made pavement.

A charming beach town in Turkey captures all the colors of the rainbow.

The walls and streets of the ancient city are peppered with penises.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

An otherworldly alpine pasture in Slovenia with historical ties to WWII and architecture that recalls Middle Earth.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Hundreds of hidden passageways weave through the old quarters of Lyon.

High winds can make this one scary landing.

Explore the quarry where the marble was sourced for Michaelangelo's David.

Why walk on this historical site when you can zoom down instead?

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

With over 12,000 different species of plants, this botanical garden is Japan's oldest and most diverse.

Crawl through the hole in the middle of this stone to break off a bad relationship or initiate a good one.