These markers are used to document elevation changes around the famed dam.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

An exotic wildlife habitat right off The Strip.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Fans of vintage Vegas, kitsch, and toy pony-based gambling now flock to a casino called The D.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

A cobblestone alley with an interesting past.

Two groundbreaking brothers from Pasadena.

One of Hollywood’s favorite government buildings.

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

These light, hollow rolls have been linked to Acadia National Park since the 1890s.

A precariously balanced rock perches on the edge of a cliff created tens of thousands of years ago by glacial erosion.

These powerful, if squat, Canadian waterfalls flow in different directions depending on the time of day.

Iconic rock formations that allow for exploration during high or low tide.

Twice a day, the water of the Petitcodiac River flows upstream in a surfable wave.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

A shoreline exhibit describing the disastrous first attempt by the French to colonize North America.

This waterfront museum in Maine is dedicated to the history of the smoked-herring trade.

This Spokane mansion and the stories within its walls have been brought back to life, thanks to careful restoration.

This playground sculpture of an icon from the past is dedicated to the children of the future.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

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

The decorations were inspired by an unlikely missing treasure.