This memorial includes fragments from one of the greatest tragedies in United States history.

The final resting place of the businessman-turned-astronomer who helped discover Pluto stands near his observatory.

A replica of the flagpole that gave a frontier town its name.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

The remnants of a creative early method of wildfire prevention.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

Inside this store, a mysterious statue draws visitors from the world over.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The eroded core of an ancient volcano is now accessible by a short hike.

The cinder cone volcano with a less than complimentary name.

The wreckage of a deadly bomber plane crash can still be found near an Arizona peak.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

A Wild West jailhouse that slid down the mountainside.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

A mysterious spirit totem at the edge of Navajo lands.

Once the product of an inexplicable gold strike, this ghost town is now home to one man and his love of classic machines.

An artificial crater field that trained astronauts for lunar exploration.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

An urban laboratory.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

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

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

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.