A home covered with elaborate mosaic and other pieces of art.

The half-mile long structure is so impressive, it even shows up on satellite images.

Taking the subway here means doing so over a bridge located in the middle of an estuary.

Inside this church is an obscure piece of art carved by the famous Alice Liddell.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

An exercise in radical design and social living that became the epicenter of Soviet spy networks in London.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

A famous burial ground with a history both grim and literary.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

The London statue that imitates passersby.

Black cat statues guard this temple-like Egyptian revival factory.

A collection of machines designed to break things for science.

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

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The canine-themed book collection claims to be Europe's largest dog library.

A plaque marks the underground site of one of London's "lost rivers."

This enormous monument is one of the most iconic structures in Tokyo, rudely nicknamed "The Golden Turd."

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

This amazing 15th-century mural remained hidden in plain sight for centuries.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

A Neolithic burial site built 1,000 years before Stonehenge.

A kaleidoscopic warehouse-maze of handmade neon signs.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.