Places summermaddux Wants to Go

A subterranean playground in an abandoned slate mine.

Legend has it these caves were created by a deity called Ogba, who is said to live inside the winding subterranean caverns.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

"Iron Age" creatures fill this huckster's rusted metal sculpture garden.

For centuries, this town's hot springs have been embraced by rich and poor—and even by Popes.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

The only natural cave bath in all of Europe.

Since ancient times these picturesque springs have been providing bathers with healing waters.

This geothermal hot spring hides beneath a slowly growing mineral dome.

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

This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

An opal mining town in the middle of Australia where people live, worship, and shop underground.

The world's first ice hotel is still one of the most elaborate and beautiful.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This wondrous waterfall rushing down a green-covered mountain wasn't discovered until 2010.

Formerly secret, precariously perched boulders.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

The world's only museum devoted solely to the art and collection of action figures.

This delightful little museum is dedicated to only one thing: pasta.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

A museum dedicated to a Cold War era sausage.

More than 8,000 drinking jugs say “Cheers!” to a guy named Toby.

The Origin of On the Origin of Species.

This once-private estate is now a dreamy, meditative garden that's open to the public.