This Queens beer hall preserves a German culture and language that is all but lost.

The oldest living organism in New York City. Maybe.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

The largest retailer of seashells in the world.

The Underground Railroad passed right through this historic Brooklyn Heights church.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

This mysterious artificial cave has long puzzled New Englanders.

Hand-crafted tributes to a stray cat named "Room 8" now cover this LA elementary school.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

Once thought to be the fabled Holy Grail, it is now known to be an oil lamp.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

The farthest you can be in the contiguous U.S. from a McDonald's location.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

The early American colonists were such ferocious drinkers the law actually required every town to have a tavern.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

This giant boulder is sandwiched between apartment complexes in upper Manhattan.

The birthplace of America's favorite fruit-flavored mystery dessert.

An enormous, inside-out glass globe built in 1935.

This Central New York ghost town was once a prosperous railroad community.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

Every year model trains zip through a miniature New York City that's now 150 landmarks strong.