One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

One of the foremost Sherlock Holmes collections is hidden away at a Toronto library.

Former self-sufficient mental institution now a planned community.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This nearly 200-foot tall limestone stack offers visitors amazing views and a chance to meet Paul Bunyan and Babe the Blue Ox.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

This is the last hand-cranked chain ferry of its kind in operation in the United States.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

This small park features a monumental fountain wall, providing a great photo opportunity in the middle of Houston.

The historic tall ship is one of just three of its kind still sailing open waters today.

This private mansion turned Catholic bishop’s home is an iconic Galveston building.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

These gardens recreate unique and endangered Michigan habitats.

These statues pay homage to the "green corridor" of parks and wetlands.

A watercolor recreation of a famous fresco unearthed at Pompeii.

One of the camera company's former manufacturing buildings is now a museum dedicated to its history.

See prehistoric footprints, plus two complete mastodon skeletons.

An ever-evolving wall of graffiti art off East Liberty Street.

Trade in that pesky human soul for cold-hard circuits.

For books about travel, whether factual or fictional, the perfect antiquarian does exist.

Everyone's invited to put on a miniature concert with this world-class musical wonder.

Little did a museum know, they possessed the last-known lunch wagon in existence.

One of the few working locomotive roundhouses in the United States.