The signs of a long buried road can still be found hidden beneath a London sewer grate.

The world's longest continuously running show has played at this small West End theater since 1974.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

An authentic Dutch windmill, built in the Netherlands and shipped to Wisconsin.

The helicopter that "Tricky Dick" absconded from the White House in on his last day in office.

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

Allegedly haunted by Walt Disney himself, this inconspicuous lamp is always kept lit in his honor.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

The tragic death of 19-year-old Mabel Tainter in 1886 led to the construction of this unique Victorian-era theater in the northern woods of Wisconsin.

As the glaciers retreated out of northern Wisconsin, this unique natural wonder was crafted.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.

Giant six-pack could provide one person a six-pack a day for 3,351 years.

In 1953, a group of Wisconsin high school students helped build a hospital by collecting over a million pennies.

The site of a 19th century "dream city" that almost rivaled Chicago before being swallowed by the Indiana sand dunes.

A chilling disappearance (and rescue) of a child uncovers a geological mystery.

Wisconsin's most celebrated export gets the royal treatment on I-94.

This lakefront cottage was crafted in the 1800s and was once a sanitorium.

The final resting place of Gary Gygax; co-creator of Dungeons and Dragons.

Legend says Dungeons and Dragons players can get their dice blessed at the creator of the game's memorial.

A historic ballroom host to famous performers from the big band era to 1980s rock.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.