This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

An underground city of salt.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Walk through Czech history in Prague's largest graveyard.

A Jenga-style cylindrical tower of books that appears to go on forever.

This doorless 20th-century elevator doesn't stop or slow down.

The first museum in the world devoted to sexual gadgetry.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This bar and museum are devoted to the controversial comic book work of Kája Saudek.

A mocking tribute to the past and modern leadership of Prague.

A pagan tradition of draping trees with rags eerily lives on.

Modern megaliths form this work of cosmic, Celtic landscape art.

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

A subterranean playground in an abandoned slate mine.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

A sea cave with a waterfall and Viking past

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

One of the world's largest salt caves is filled with fragile salt sculptures, salt rivers, and huge salt megadomes.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

Billed as the "largest natural flower garden in the world" this Middle Eastern show field has little competition at 45 million flowers.