The largest and best-preserved Roman amphitheater in Africa was designed to seat 35,000 people.

An ancient Phoenician citadel once stood at the site where Queen Dido first landed, according to legend.

An ancient burial ground believed to have been used for ritual sacrifice.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.

This amazing oasis of art and plants is hidden on the outskirts of Marrakesh.

In Hong Kong, a fairytale flower tunnel is hidden within the gardens of a public housing complex.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

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

A stunning medieval castle houses this eclectic, interactive tribute to all things wine.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

A magnificent Neogothic tomb hides within this Italian fairytale-like forest.

Ride a boat through this magnificent underground world, which now doubles as a theater.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

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

"The prettiest love letters in the world" ... or so said Lord Byron.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

This precariously perched fortress was once ruled by a crow-worshipping baron.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

An ancient artistic garden parlor full of hidden water wonders.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.