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

These three pillboxes still remain as a witness of the Spanish Civil War in a park of Madrid.

Remains of the lost church hide beneath this Spanish Parliament building.

This embalmed man is one of the best preserved mummies from the Canary Islands.

The lengthy skeleton of one of the tallest Spaniards of all time is on display in Madrid.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

An exquisite collection of fairytale conveyances that puts most car museums to shame.

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

This now abandoned restaurant provides some of the most amazing views of Lisboa.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A small granite monument marks where the borders of three countries meet.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

The man who helped establish the first rules of golf.

A burial vault located under Tiber Island in the middle of the Italian capital.

This ancient market is often referred to as the oldest shopping mall in the world.

A forgotten "city of water" underneath the famous Trevi district.

A wunderkammer of curious objects and intriguing art nestled within a hub of ancient Roman sites.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

The Pope’s secret escape route.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.