Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

This London plaque marks the spot where David Bowie's famous alien made his debut.

An artistic tribute to the famous singer, just around the corner from where he was born.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Macabre astrological automaton clock dating to the late 1400s.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

A haunting collection of the vanished and disappearing natural world.

The mummified relic of St. Catherine sits forever on a golden throne.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

The world's only museum devoted to the wonders of fluorescence.

A beautifully eclectic mix of architectural styles.

The attic of a four-century-old canal house hides a clandestine church.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

Pilgrimage site for star-crossed lovers.

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

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

Pompeii's less famous neighbor is still revealing her secrets.

These "anatomical machines" are only one of the many strange items in this Italian crypt.