Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Rome’s legendary peephole vista is also a former Crusader stronghold.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

A visionary Italian architect created an impressive cluster of concrete structures for a family's private tomb.

Enormous pendulum helps keep Taiwan's tallest building from swaying.

A 16th-century horror show built in a lovely Italian garden.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

The Habsburgs' royal collections of art and wonders.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Largest necropolis in the Mediterranean.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

Roman-era ships unearthed...

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Famous landmarks and structures from across Italy fill this miniature park.

The ruins of this medieval tower are destined to crumble into the sea.

A haunting collection of sunken wooden barges litters this Italian river bend.

One of the largest busts in the world celebrates the German city's erstwhile namesake.

A son-and-daughter meat market, hawked by mom and dad.

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