This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

World's largest Christmas store.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This picturesque cliffside beacon no longer calls to sailors but shines once a year in honor of a famous shipwreck.

This replica of the Greek structure is in the heart of Nashville.

The ancient latrines of the Greeks, in all their public glory.

What once sat in the world’s spotlight is today a largely disused ghost complex.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This private residence was the template for one of the most beloved television homes of all time.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A geological mystery on Camelback Mountain.

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

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

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This posh mansion began as a family's estate and ended as the site of a murder ripped from the pages of a pulp novel.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

You thought Santa Claus didn't exist, but it turns out you were wrong.

The world's longest known cave system.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

Rabbit Hash is a heaping slice of Americana from another era, with a very peculiar origin behind its unusual name.