A striking public sculpture representing the period of martial law in Communist Poland.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

The silly symbol for an underground protest group is now scattered around the city.

This man-made mound monument was built out of soil from all across the Polish empire.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Real bones which are said to have belonged to a Polish dragon.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

A toxic ghost town sitting atop a massive coal fire.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

The only arched bridge made of stone on the entire Mississippi River.

When flour explodes, it's not a pretty sight.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

A sprawling collection of over 106,000 toys from around the world.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Home to three historic ships from the age of Vikings.

Victorian "Fancy Craft" Hair Wreaths and Relics.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

This subterranean necropolis holds three floors of antler-dug grave caves.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Pompeii's less famous neighbor is still revealing her secrets.

Ancient snack bar of the Roman Empire re-opened.