A museum marks and documents the site of the Titanic's launch.

A sacred well steeped in Pagan roots on the West Coast of Ireland.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

One of the smallest towns in the United States.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The first declared National Monument in the United States.

One of the largest crucifixes in the world stands 55 feet tall in a secluded, wooded area of northern Michigan.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

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

World's largest Christmas store.

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

Legs Inn provides Polish food, a cornucopia of Native American artwork, wood carvings, and mounted deer heads.

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

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

The world's longest known cave system.

Elaborate drama imparts an appreciation for 19th century hardships.

This massive roadside mascot was the first version of the giant to illustrate his butt.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

When flour explodes, it's not a pretty sight.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The largest earthwork effigy in the world.

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.