Hidden high on a remote mountain peak is a humbling and mysterious Vietnam War memorial.

Hidden beyond a kitschy giant beetle is this remarkably sprawling collection of preserved insects.

This super steep hike ascends 2,000 feet in less than a mile.

When ecosystems collide in the arid Southwest.

The highest bridge in America was built for an almost unnervingly small amount of money.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Installed as a beacon of hope for a hurricane-racked island, the statue had to be moved multiple times due to the eroding coast.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

This abandoned Civil War fortress is slowly being swallowed by the waters of Lake Borgne.

Made of giant chains and hung with shackles, this iron cross honors those unknowns who perished under American slavery.

The final resting place of New Orleans' most famous voodoo priestess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

The decaying ruins of a failed mining company’s water diversion project cling to the side of a desert canyon.

Colorado's only true geyser is hidden within the San Juan National Forest.

Gleaming self-built castle towers made from beer cans and inspired by "Vitamin Mary Jane."

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

Metal water storage tank turned ethereal concert hall.

A recreation of an Old West apothecary full of curios.

The giant stump of the once towering cottonwood where Ute people held tribal meetings.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

The largest self-built castle in the U.S., six decades in the making.

Open-air cremations in Colorado's self-proclaimed spiritual mecca.

A mental health hospital dating back more than 139 years, now features a museum.