This picturesque medieval monastery guards a small trove of historic treasures.

This 135-year-old weather station studied the effects of the climate on human health.

Longest fortress system anywhere in Europe.

It took more than 20 years and a sharp eye for one man to assemble this quirky collection.

This little museum has an exhibit devoted to the elusive forest denizens.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Medieval torture techniques with a modern conscience.

Numerical symbolism abound at East Asia's oldest observatory.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.