Beautiful Victorian buildings from L.A.'s forgotten architectural past.

Historic marionette theater features thousands of handmade puppets and free cups of ice cream.

Italian cave with exceptional acoustics and an unsavory history.

This one-time health resort was used by aristocrats around the world.

An otherworldly alpine pasture in Slovenia with historical ties to WWII and architecture that recalls Middle Earth.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

Where commuters walk through remnants of an ancient Greek necropolis.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The world's most active stratovolcano is almost always erupting.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

Colorado’s most beloved glacier is an imposter.

In the middle of a busy airport, a statue honoring the astronaut who told Houston that Apollo 13 had a problem.

Hike to the decaying remains of a dream house with a spectacular view.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

One of the most extensive and well-preserved collections of dinosaur footprints in North America.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

The fifth-longest natural arch in the world, and the longest outside China.

Thousands of years ago, Indigenous people painted images onto these canyon walls that are still on display today, provocative, mysterious, and enduring reminders of the people who lived here long ago.

Instead of faces, these sculptures have barcodes—statements on societal dehumanization.

This tiny patch of arid sand sits in one of the greenest states in the United States.

Life-size bronzes of the Grinch, Cat in the Hat, Yertle the Turtle, Sam-I-Am, and the Lorax—and the author himself.

Originally the home of chewing gum mogul William Wrigely Jr, it is now the official offices of the Tournament of Roses.