This giant iron playfully pays tribute to an early 20th-century architectural trend.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

This coffee shop lies hidden beneath a historic church.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

Ship-sized kinetic sculptural fantasy.

Two plaques commemorate the site of Shakespeare's first theatre.

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

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

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

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

An out-of-place slice of France, smack in the middle of Shanghai.

The once highest point in China blends symbolic design with a kick of adrenaline.

Rivers of cattle blood gone, a strange Escheresque building remains, the last of its kind.

The smallest post office in the United States is no bigger than a broom closet.

For 32 years the famous Ringling Bros circus troupe spent winters in this sunny spot in Florida.

An abandoned vacation home spent a decade taking on legends. It's now taking on water.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

A sculpture of 18 beautiful clay mandalas on display at Warm Mineral Springs in Florida sends a message of world peace.

This kitsch eatery is chock-a-block with bric-a-brac.

Just below the surface, shrimp are producing temperatures hotter than the sun.