Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

The world's oldest known salt mine.

Baroque celebration of the end of the Great Plague of Vienna.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

The fairy tale castle of the "fairy-tale king."

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

A walk through the historic city center, under the streets of Seattle.

This working class sculpture pounds his hammer all the livelong day.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A vertically floating hemlock controls the waves and weather at Crater Lake.

A massive sea stack famous for its appearance in The Goonies.

The first car-centric shopping plaza in the U.S. brought a little bit of Spain to downtown Kansas City.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Community bookshelf of 25-foot-tall book spines.

This recently restored timepiece has stood all around Kansas City.

A wall of chewing gum moonlights as collective art.

A museum dedicated to the history and exploration of both popular music and science fiction.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.