Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

Built on the foundations of an ancient Roman villa, the unique architecture of this castle on the Catalan coast was used as a set for 'Game of Thrones.'

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

This enormous sardine in the Segura River pays tribute to an annual post-Lent tradition.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

The magnificent sanctuary is Spain's first purpose-built structure of its kind.

The blowhole bursts spectacularly right next to the buildings in a medieval seaside town.

A place steeped in history that may be best known as the set of a 1960 film.

This bike path was sunk below water level for maximum wonder.

A beer pipeline runs beneath Bruges.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

A moving memorial to the fallen and missing from WWI trenches.

This memorial museum chronicles the apocalyptic destruction of the First World War.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

Exquisite carvings of leaves, Green Men, and the occasional dragon adorn a medieval chapter house.

Once a palace for the Archbishop of York, these 15th-century ruins now serve as a haunt for history buffs.

A 13th-century inn where the ill-fated King Charles I spent his last night of freedom.

Every half hour the eye-rolling clock face sticks out its tongue to mock the good citizens of Koblenz.

Tiny castle in the middle of the Rhine made you pay to pass.

Legendary site where an evil bishop was devoured by rodents.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

This fountain of a little boy that spits on passersby at erratic intervals is a town icon.