A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

Living towers made of people that are now recognized by UNESCO.

This semi-secret storybook hedge maze is also the oldest garden in the city.

Mountain where Jesus was first tempted by the Devil.

This ancient Spanish castle sits high upon a hilltop.

Mine shafts and hard pastries await visitors at this massive mountain of salt.

This chest hospital with a dark, haunted past serves as a fitting set for horror films and a paradise for ghost hunters.

A long strip of fossil-filled limestone makes up this natural bridge above a rushing stream.

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

The small Spanish town that played an important role in a human's first steps on the moon.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

Though it may look like a businessman's lost luggage, this case suspended under a highway bridge is actually a contemporary art installation.

A 200-year-old tavern challenges guests to finish a glass of wine while hanging from a ceiling beam.

An art installation commemorates journalist Nellie Bly's undercover reporting inside a New York asylum.

This hidden museum examines the complex history of the country's law enforcement.

An Irish cemetery filled with victims of political strife and violent conflict, including the grave of Bobby Sands.

These barriers stand as stark reminders of Northern Ireland's troubled past.

One of the largest lenses of its kind ever created, this former ship beacon has been brought down to Earth.

Step into Narnia at this small park featuring statues from "The Lion, the Witch, and the Wardrobe."

Celebrated in poem, this tiny hidden cemetery has a big and grisly history.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

These engineering masterpieces are a dominant feature of the Belfast skyline.

A small plaque highlights the damage caused by German air raids during World War II.