Abandoned concert venue legendary for its rock counterculture.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.

Opulent downtown movie theater now houses cars as an indoor parking garage.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

The spectacular history of spectacles on display.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

An L.A. traffic island where the faces of locals have been carved into massive granite eggs.

A cult following celebrates the legend that belies this curious podiatrists' office sign which has worked its way into song, literature, animation, and the visual arts.

Nestled between a college and a golf course, the garden is home to more than 2,500 rhododendrons.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

A measuring mishap led to these artificial stone ladies losing their stomachs.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

This London plaque marks the spot where David Bowie's famous alien made his debut.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

A little slice of Japan and its aesthetics in London's Holland Park.

Banksy gives themself artistic license with this piece of London street art.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.