Every year, over 25,000 monarchs overwinter in Pacific Grove.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

In Mumbai, a bright blue synagogue is the largest one for the Baghdadi Jewish community in Asia.

This small shack near the entrance to Sequoia National Park has been in almost continuous operation for the last century.

This massive statue of John Muir on the side of a California highway was carved from a redwood tree.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

A Mars simulation in the southern Utah desert.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

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

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The mysterious round rocks of Schooner Gulch.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

An inconspicuous footbridge beloved by San Diego locals.

Nelson Mandela lived here with his family from 1946 until his arrest in 1962.

Two giant painted cooling towers make for one of the world’s most epic bungee jumps.

These otherworldly caverns form Earth's oldest known cave system.

Visit these gentle, bell-bottomed, exquisite equines at the home of North America's first Gypsy Vanner horses.

A tunnel with windows, so you don't miss out on the impressive views.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.