Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A public urinal so pretty, it was declared a national monument.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

Amsterdam's Red Light District leaves little to the imagination.

Amsterdam's former hotspot for public executions and dissections.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Stalinist skyscraper built with help of cryotechnology.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Hidden in a metro shop under a shopping mall, this small museum tells the story of one of the world's largest urban transit systems.

Former headquarters of the KGB.

Thirteen sculptures in central Moscow graphically depicting vices of the modern world.

Museum design and public transportation meet in this unique Russian train car.

World's largest bell sits on the grounds of the Kremlin in Moscow.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

A self-funded cemetery with a long list of inhabitants.

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

Cockatoo Island is a Heritage-listed island in the middle of Sydney Harbour.

This rare effigy of the author spent years lost in storage.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.

People can't get enough of these adorable Japanese photobooths.

Native Australian lizards inhabit this garden celebrating Sydney and its sister city in China.

Come for the flowers, stay for the bats!

This historic observatory contains the world's oldest refracting lens telescope.