A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

The curiosities and wonders of pharmacy in a delightful historic building.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

The final resting place of New Orleans' most famous voodoo priestess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

A snapshot of the city's fascinating voodoo culture.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

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

The secret medieval communication system will whisk your words above the noise of the crowd.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

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

This giant middle finger statue sends an unambiguous message to Italy's bankers.

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

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

This Roman statue is missing a limb from when the Venetians stole it from Constantinople during the Crusades.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

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

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

The plague quarantine island home to the alleged "Vampire of Venice."

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