Building owners can take out tiles for free at this repository for historic building materials.

This giant sculpture made of trash is a critique of society's wastefulness.

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

A garden in Lisbon filled with giant porcelain creatures.

The medieval castle built as headquarters for the Pope's secretive Knights Templar.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

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

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

Houses are tucked between, on, and underneath giant boulders.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

An enchanting rocky island of scraggly baobabs surrounded by an ancient sea and sprawling salt pans.

Giant disc-shaped gate took 20 men to close off this city in Madagascar.

You can soak in three relaxing pools filled daily by the tide.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

White llama terraces dazzle in Peru's "other Machu Picchu."

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.

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

This unique religious structure is an architectural gem with arresting ocean views.

This deceptively salty lake looks like blushing pink lemonade.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Central Europe's largest collection of mini-bottles is on display at this museum devoted to a bitter Hungarian liquor.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.