Real bones which are said to have belonged to a Polish dragon.

Norway's oldest cathedral still in use.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

A striking 12th-century-style castle built on the edge of a cliff.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

Single runway interrupted by a busy road that cuts across its middle.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

An apparition of Virgin Mary in Herzegovina.

The elliptical citadel resisted the advance of the mighty Ottomans several times, thanks to the military prowess of the "Dragon of Albania."

A mysterious castle built as a monument to lost love.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

This forgotten graveyard in rural New York State once served a pioneering hospital.

This Connecticut chapel is a starkly modern, and surprisingly colorful, architectural rebel.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This impressive Boston holy house is the American mecca for Christian scientists.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.