One man has spent decades faithfully constructing this unique brick and cinderblock castle.

This defunct, fortress-like prison has been the setting for several movies.

Dinosaurs invade a suburban Nashville neighborhood.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

An abandoned town is hidden in Great Smoky Mountains National Park.

It may take some time to locate, but it's sure to warm even a heart of stone.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

One Confederate statue that accurately reflects the ugliness of its subject.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

This scented city oasis was a labor of love.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

This failed condo development was reborn as a street art hub.

Five acres of divinely inspired folk art.

A young botanist's horticultural vision realized through a lifetime of planting, tending, and collecting seeds.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A wall of chewing gum moonlights as collective art.

A giant Troll lurks under one of Seattle's oldest bridges.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

This unique historical monument features large concrete spheres designed to resemble fallen stars.