One of only two commuter aerial tramways in the United States.

A bit of retro transportation flair preserved in the world's largest department store.

Built hundreds of years ago this downtown iron barrier once protected a much despised king.

Unrepaired walls from a 1920 anarchist bomb attack.

This nearly invisible wire transforms much of the city into one big, symbolic home on the holy day.

A remnant of the original World Trade Center complex continues to serve as a commuter gateway.

Elevated freight railway turned wildly successful urban park.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

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

A walk through the historic city center, under the streets of Seattle.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

This museum remembers the tough Mormon trek across America through an intriguing array of artifacts.

This large, castle-like structure is hidden amid the mountains on the grounds of the Utah State Hospital.

The last SR-71 ever constructed.

This granite monument at the site of an ill-conceived tourist attraction is built from the same stone as the Mormon Temple.

Pyramid home to an obscure religious group that practices modern mummification.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

Visitors to this library are in for a real-world education in modernist architecture.

A replica that won't float away.

In the heart of Brigham Young's promised land sits a festering plot of industrial ruin that has been claimed by society's outcasts.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.