This Greek temple, open only an hour a day, was the site of a war of tastes between an architect and an artist.

Theme park featuring miniature replicas of European monuments.

Climb inside an iron crystal magnified 165 billion times its normal size.

Relics from as far back as the 16th century are on display in a city known for its playing card industry.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

Most prolific publishing house in the 1600s open to the public.

A giant bug impaled on a 75-foot-tall needle.

This whimsical statue dumps water on its head to symbolize knowledge flowing into his brain. Or maybe booze.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

A pilgrimage site where people ask Saint Dymphna to watch over those who are not of sound mind.

A 14th-century fortified keep showcases the masterpieces of an ingenious 20th-century clockmaker.