These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

Tubing through a cave lit with glowworms is a magical underground experience.

Arlington Cemetery exhibit dedicated to death and grieving.

A mysterious castle built as a monument to lost love.

The site of the climactic scene from the classic horror film is now a historic landmark.

A beautiful geyser under environmental threat.

A monument to the art of slicing people open.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A modern day curiosity cabinet.

Pompeii's less famous neighbor is still revealing her secrets.

Gift shop offering toe tags and chalk body beach towels tucked into a coroner's office.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

A rare view of a preserved Victorian science museum.

Stroll through a wonderland of stupendous moss-covered trees.

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The United States Capitol's former columns still stand.

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

Elevated freight railway turned wildly successful urban park.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

America's most famous piece of self-built architecture.