Croatia's towering concrete blossom grows from the site of a World War II concentration camp.

Pilgrimage site for star-crossed lovers.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

A modest museum in the final home of Italian poet and father of modern Italian, Francesco Petrarca.

This military mausoleum captures the solemn grandeur that most memorials only aspire to.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."

The tomb of the mythological founder of Padua is not hidden in some obscure crypt, but stands right in the middle of the city square.

The oldest botanical garden in the world that technically isn't the oldest.

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A musical instrument played by the sea.

Trimmed trees grow alongside the graves like topiary tombstones.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Where the lovelorn find a home for their sentimental keepsakes.

Humble beginnings for one of the world's most famous scientists.

This huge metal monument is slowly being stripped to its concrete skeleton.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

The remains of a sunken military ship wreck visible through clear water.

A whimsical bridge adorned with decorative dragons.

Island wonderland for communist autocrats.

During World War II, this rice mill became a Nazi concentration camp.