The remains of what was once the world's steepest passenger funicular.

This Central New York ghost town was once a prosperous railroad community.

Although it appears ancient and mysterious, the quirky folly was actually built 200 years ago by an eccentric estate owner.

Famously misunderstood wonder of the ancient world

A wooden statue of an Estonian pagan god and King of the Setos stands atop a sacred hill.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

Town of spiritualists and mediums in Florida.

This little Vancouver shack is a temple to all things Hendrix.

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

This historic rec center in the heart of Israel is a bastion of peace and togetherness.

Neighborhood in Jerusalem is home to the ultra-orthodox haredim.

Descend 2,030 years into the past in an ancient tunnel built to support Jerusalem's most famous wall.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

This grubby wall is said to be one of the Earth's esoteric energy centers.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

With its webbed walls and bright red coloring, Calgary's iconic bridge looks like a finger trap puzzle stretched across the river.