An ancient glacial pothole waterfall in the heart of the Green Mountains.

This charming woodland trail is peppered with poetry.

A once-glowing grotto at the bottom of Waikapalae Wet Cave.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

The peaceful space is adorned by paintings by the famed abstract artist Mark Rothko.

This historical air terminal in Houston is slowly becoming an aviation museum dedicated to the city's aeronautical history.

Artist James Turrell's ode to dawn and dusk on the campus of Rice University.

A little bit Wonkatania, a little bit pink elephant.

A 90-year-old underground water reservoir offers a more industrial kind of tranquility.

One man's fulfilled dream of living on an artificial island made of recycled plastic bottles.

A park filled with vibrant mosaics created by more than 300 folk artists.

A rusted metal giant pays tribute to Birmingham’s industrial past.

A unique book shop with a collection of rare tomes and a nostalgia museum.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

The final resting place of the camel who served with the Confederate Army during the Civil War.

One of the best examples of Art Deco architecture in the United States.

These massive mitts are made of 30 tons of devotional bronze.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

A subterranean shelter remains intact under a busy Paris railway station.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.