A pair of gigantic baby heads greet passengers at Atocha Station.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

This abandoned five-star hotel is now a five-star urban exploration destination.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

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

This oddly shaped church resembles a rocket.

A submerged village appears when dam levels drop.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

This architectural beauty is the home to a personal collection of more than 600 examples of mechanical musical instruments.

The medieval town's star-shaped walls are geometrically dazzling, though not entirely impenetrable.

A hidden three-foot-wide house separates these two regal churches.

The best place in the world to buy tinned fish.

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

A lush oasis full of vibrant plants and striking geometric displays.

Hidden beneath a beautiful overlook you’ll find the history of the city depicted in comic strip format next to a pay toilet.

This castle has links to Portugal’s founding and struggles for independence.

Come for the bread-themed puppet show, stay for the buffet.

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

These rock drawings in the Côa Valley also create an ancient optical illusion.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

Perhaps the most spectacular grotto along the Algarve coastline.

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

The remnants of an abandoned, 19th-century gold mill along Aruba's rugged northeastern coast.