South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

Welcome to the home of the world's largest typewriter company.

This poured-concrete water reservoir is a gem of modernist architecture well-hidden in a city forest.

In 1912, a broken section of the reservoir wall released millions of gallons of water and destroyed many homes downhill.

A water reservoir disguised as a castle stands atop a hill in a park in Stockholm city.

A very uncommon water tank standing in the middle of the grapevines in Bordeaux nearly a century after its construction.

A statue of a Scottish cultural icon in central Sydney.

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

A rare specimen of an iconic extinct animal in downtown Sydney.

The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

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

A former drinking water storage reservoir transformed into a sunken garden.

Scotland's oldest purpose-built concert hall houses an incredible collection of ornate, centuries-old keyboards.

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

A provocative museum dedicated to the genre and the harsh realities that inspired its origins.

It took a lifetime to collect these mechanical musical wonders.

Small transmitter operated by a priest in the Netherlands.

The heart of Dutch football history.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

At this barrel organ museum, history and live concert keep Dutch street organ culture alive.

A little-known hot spring haven right below the highway.

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.