Amazing taxidermy dioramas from the 1960s in a cement building meant to look like an ice cave.

This hidden jockey “walk of fame” celebrates the winning riders of the Kentucky Derby.

A clock set into the concrete outside a Manhattan jeweler has been telling time underfoot for over a century.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.

The world's oldest hologram gallery and the labyrinthine laser laboratory of a holography pioneer.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

New York's oldest magic store.

An abandoned theme park with a strange and tumultuous past.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

Historic town settled in the 19th century because of its convenient location along a popular coal transport route.

Some of New York's best tacos can be found in the back of an unassuming bodega in Queens.

The oldest pastificio in Queens offers visitors fresh noodles and a peek inside the macaroni-making magic.

This quirky local sculpture is quite literally a fish out of water.

The alley connecting two of country music’s most historic venues has a rich history of its own.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

Veritable museum of 20th century country music history.

Home of an evil witch famous within southern folklore.

A castle built by an eccentric medieval enthusiast in rural Ohio.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.

Just a few miles from downtown Atlanta is a trail covered in a crazy collection of outsider art.

You must take the A train... to the last active cemetery in Manhattan.

A crumbling hospital from the 1850s on Roosevelt Island.

Along the banks of the River Rhine lies a park that seems unassuming, but beneath the surface lies a long and fascinating history.