Mysterious heaps of stones dot these otherworldly woods.

This dazzlingly turquoise mountain lake was created in the wake of a natural disaster.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

It would take you approximately an hour and a half to walk to the end of Mexico's largest pier.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

This lake’s emerald green waters are a spectacular sight, but it’s not a great place for a swim.

These quaint cottages feature built-in signaling devices for fishermen.

Enormous sandstone towers loom within a Czech forest.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

The ornate structure is part of a building boasting more marble than the Vatican.

A barbarous band of serpents guard the bases of these Aztec temples.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

An ancient Incan convent on Lake Titicaca's Island of the Moon.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

This church carved into the rocks is full of enchanting stone statues.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

The ruins of this medieval tower are destined to crumble into the sea.

Outlaws, hot springs, and tragedy have all left their mark on this ancient road in the Icelandic highlands.

Flames have been burning within this mountain for more than 2,500 years.

This lonely rock has been turned into a character loved and feared by children.

It was meant to help transport wounded soldiers to a secret underground hospital.

A semi-abandoned village destroyed by U.S. bombings during World War II dominates the valley of Turano.

These legendary stone steps were once used to haul coffins up the rockface.