This wrecked airplane has been sitting on a black sand beach since the 1970s.

Puffin enthusiasts flock to Europe's largest seabird cliff, which over one million birds call home.

The oldest steel ship in Iceland has been beached for years and is now a rusting ruin.

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

Iceland's tribute to its thankless civil servants.

This Viking-inspired miniature golf course features a pirate ship and views of Icelandic landscapes.

An abandoned observatory in the middle of the Illinois prairie.

You can swim in these highly salty, mesmerizingly blue lakes in the Atacama Desert.

A beautiful deserted greenhouse in the middle of a park.

The scars of World War II are preserved on its walls.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

This sprawling bookstore spans four floors and has more than a million books in stock.

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

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.