The vast, legendary catacombs hold secrets much stranger than stacked bones.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

This massive library holds what was once the largest book collection in the world.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

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

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

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

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

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

100 year tradition of fist fights, marked by marble footsteps.

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

Go inside to really appreciate this 500-year-old technological masterpiece.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.