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

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

Abandoned silver mine strewn with wrecked and twisted structures.

An incarceration museum on the spot of possibly the oldest prison in England.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

A museum dedicated to the mysterious cryptid.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

One English town's celebratory landmark spurred more trouble than anticipated.

In a small Kentish seaside stands the former home of one of the greatest science-fiction writers.

A winding cave grotto walkway built to provide employment for veterans after World War I.

This Tudor-era castle was once part of King Henry VIII's plan to protect England from invasion.

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

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

This Great Plains museum pays tribute to both the prosperity and tragedy of the North American fur trade.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

An experimental, automotive replica of Stonehenge.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

This museum offers an actual time machine back through Colorado's past.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The huge collection of paintings of the American West is one of Denver's best-kept secrets.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.