This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

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

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

One of the best collections of wax anatomical models in the world.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

Dine amidst exotic plants at this former royal greenhouse.

A 22-million-year-old sandstone cave is a natural habitat for award-winning cheese.

These relics of the city's past now exist as a prominent modern feature.

Designed as a reminder of one of the darkest moments in Austrian history.

A rooftop restaurant hides in plain sight atop Vienna's Palace of Justice.

A very classy 1920s-era bar right in Grand Central Station.

The world's tallest carillon is located at the top of this skyscraper in Mexico City.

Though the name might suggest otherwise, this is an American cemetery.

Its most enigmatic sculpture is a giantess with a ghostly face on her knee.

Murals made with millions of colorful stones adorn the abandoned building.

This industrial Art Nouveau gem is a historic hotspot for Mexican counterculture.

These museum grounds are a Dalai Lama-declared peace oasis.

One of the world's richest men bought this former paper factory and transformed it into a mall.

These magnificent 240-year-old machines are considered distant ancestors of the computer.