The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

A monument to one of the greatest matadors of all time.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

A memorial to honor those who were killed in a Bastille Day terror attack in Nice.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

A unique seaside cave where Aleister Crowley faked his own death.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This small chapel is built of human bones and decorated with a golden skeleton.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

A 16th-century Andalusian palace.

Spain's largest bullring offers a unique glimpse at architecture and history.

The final resting place of the great navigator, or maybe his brother.

The world's largest wooden structure.

Every year, the town of Menton, France, turns lemons and oranges into giant sculptures depicting windmills, dragons, and more.

An Orthodox church built by the Royal Family for the Russian community exiled to the French Riviera.

This saucy statue once caused outrage among locals.

This massive blockhead sculpture hides an entire library.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

This Parisian gem is one of the most incredible ethnographic museums in the world.

This bridge was constructed from the rubble of the infamous Bastille.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The video game-themed street art first popped up in the French city.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.