In the middle of a desert subdivision, there is supposedly an impact crater site from Kcymaerxthaereal times.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A historic pub with traditional Irish cuisine, fine drinks, and a paranormal past.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

This lovely hilltop tower was specifically built to withstand 100 MPH winds.

The former home of Samuel Clemens and family remembers the happiest period of the author's life.

The author of Uncle Tom's Cabin was neighbors with Mark Twain while living in this Connecticut home.

This Connecticut chapel is a starkly modern, and surprisingly colorful, architectural rebel.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Ancient pueblos built into the base of a natural canyon wall.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The unusual burial monument of Arizona's first governor.

Not quite the menace it once was, this monster still has some chops.