An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

An architect's childhood fantasy treehouse made real.

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

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

Haunting and beautiful trees, doomed to die.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A display of magnificent stained glass windows is the first exhibit of its kind.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A massive volcanic plug is now a protected area that hosts a number of bird species.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

The structure has welcomed visitors to this scenic harbor city on Lake Michigan for many decades.

In this quiet park a rendition of a classic painting graces the outside of a charming restroom.

This missionary's legacy looms large over the Upper Peninsula of Michigan—literally.

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

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

A charming remnant of 19th-century fishing towns sits on Michigan’s Leelanau Peninsula.

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