There aren't too many operational funiculars around, but Pittsburgh has two!

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

Enormous underground chamber built to detect 'ghost particles' of the universe.

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

This 700-year-old street food market features baby octopus and soy donuts.

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

This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

A perfect replica of the beloved show's first set.

At this research institute, the chile is king.

A museum dedicated to the legacy of Bob Moog and his pioneering synthesizers.

A long-vacant Scottish Rite temple in Hollywood has been converted into an art museum filled with Masonic relics.

This supper-club-turned-concert-venue still serves drinks at its original rotating bar.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

The basement bowling alley of this St. Paul dive bar is decorated with thousands of dollar bills.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

A quirky assortment of musical marvels from around the world.

"A hideous albatross in the Hudson River Valley."

A once-groundbreaking power plant turned into a hotel and mini-museum of archeological and geological wonders.

Surprisingly aquamarine waters fill deep lakes formed at the end of the last ice age.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

The only thing better than tubing down New Jersey's scenic Delaware River is doing so while eating a hot dog from a giant floating stand.

A tribute to the twin ideals of religion and patriotism, built by a Catholic priest from rocks, glass, and innumerable found items.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.