These wooden balconies that are both decorative and functional.

This mountaintop observatory is home to one of the world's largest reflective telescopes.

The effect of this ancient form of image projection situated atop an 11th century Moorish palace is thrilling.

Its appearance in "Game of Thrones" may spur on the long-awaited restoration of this medieval shipyard.

The world's largest wooden structure.

One of the oldest wine cellars in Germany is now a restaurant beneath Bremen's town hall.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

This mine is home to the largest man-made hole in Europe.

The legendary giant's severed hand sits on Antwerp's popular shopping street.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

This abandoned viewing platform has become a monument to unnecessary government spending.

This architectural oddity is an oasis of green on the outskirts of Valencia.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Vibrant street art created with mixed media.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

This house's itty bitty size means no humans allowed.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

The struggle of a small Dutch island against the sea.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

The world's oldest rose is so tough it survived being bombed in World War II.

Historic medieval fortified city in southwest France.

Site of the largest volcanic eruption in the last 25 million years, one which may have nearly wiped out humanity altogether.

Sofia's legislative center is continuously reinventing itself.