Where a staggering 747 ships were constructed during World War II.

A classic advertising icon immortalized in regal bronze.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

The longest covered bridge west of the Mississippi River.

Hidden beneath a lake for decades, this brutalist mine has now emerged from beneath the receding waters.

Where the writer penned his famous story about a jumping frog.

A popular tourist cave with a dark past.

Its dark depths conceal millions of rare, delicate crystal formations.

Founded in 1873 to support the needs of the gold mines flourishing nearby, this is the last water-powered foundry in the United States.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

These pastel-colored homes were built when the island of Macau was a Portuguese colony.

The final resting place of 19th-century sailors previously banned from being buried within Portuguese Macau.

The abandoned airport is a strangely intact remnant of Cambodia's brutal Khmer Rouge regime.

A secluded, little-known temple hidden amid the dense jungle.

One of the biggest markets in Asia, under one of the continent's largest domes.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

Bombed and burned, this monument represents the often controversial ties between Vietnam and Cambodia.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

A vaudeville performer mounted this hollowed-out redwood log onto the chassis of a truck, and toured the country spreading a message of conservation.

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

An optical illusion found amid a logged redwood forest.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.