A hidden beach at the end of a tunnel of mangrove trees.

The intended purpose of this unfinished Elizabethan building remains a mystery.

A poignant memorial shows the widows and children left heartbroken by the worst fishing disaster in Scottish history.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This 1913 single-screen cinema is a charming survivor in the age of the multiplex.

An ancient city hidden in the heart of the Sierra Nevada mountains.

Bright Indonesian villages painted in a rainbow of competing color schemes.

The ruins of an 11th-century Norman castle with a rare, perfectly circular shape.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

Budapest's Communist-era statues, banished to the suburbs.

Possibly the world's largest hourglass only needs to be reset every New Year's Eve.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Museum dedicated to the terror regimes of Hungary.

Once the home of a hermetic monk, this cave now houses a small church.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

This small museum is basically a time capsule of daily life in the Soviet Union.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.