A registered historic landmark shrouded in unsettling local legends.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

Legend says train robbers stashed their gold within the depths of this unusual cave.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

An underwater restaurant, surrounded by a coral reef.

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

The bizarre headgear looks like it was made for a fool, not a king.

A mapping error in the 19th century made loggers think this section of the forest was underwater.

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

This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

The farthest you can be in the contiguous U.S. from a McDonald's location.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

An abandoned stretch of highway, deteriorating next to the operational one.

German and American troops joined forces to defend this fortress during the strangest battle of World War II.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

This massive chapel in the middle of the Indonesian forest is both haunting and fowl.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.