Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

These abandoned country fairgrounds are filled with replicas of Spanish monuments.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

A small but immensely extravagant palace built by the "Night King."

The fairy tale castle of the "fairy-tale king."

One of the highest emergency huts in the world has been waiting almost a century to give imperiled climbers a place to lie down.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

There has been an astronomical clock on this spot since the 14th century.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

The bears of Bern have been a city highlight for over 500 years.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

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

The alpine falls where Sherlock Holmes apparently met his demise can actually be visited.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

The celebrated eyesore created by starry-eyed sweethearts.

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

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."