The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

Bridge that died in war and was resurected.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

An oasis of shade and color amidst the bustle of the old city.

This demon atop the Notre-Dame de Paris looks utterly bored.

A Belle Epoque bordello turned into a themed love hotel.

This lesser-known Frank Gehry building houses a treasure trove of cinema history.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

One of the oldest masonic museums in Paris.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

BDSM, 1930s Style.

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

An emerald-green grotto just a short trip from Austin.

Coca Cola may be "the real thing" but its inventor, buried at this Georgia gravesite, called it a "valuable brain tonic."

The palace of the King of Kings, burned by Alexander the Great.

One of the windiest peaks in Crimea is home to an incredible set of cable bridges.

The longest trolleybus route in the world, from Simferopol and Yalta.

Mirrors and glass shards cover every inch of this arrestingly beautiful mosque.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.