This giant monument of the RCA mascot is a beloved fixture in Albany, New York.

The first American home of the isolated, egalitarian religion has a trove of Shaker architecture and artifacts.

Once the tallest building in the world and the site of “the highest dinner ever held in New York” this building now holds the most expensive penthouse in the city.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The tiny church offers succor to travelers driving by, but only eight at a time.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Perhaps the most scandalous statue of America's first president.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

An experimental, automotive replica of Stonehenge.

Hidden behind Lincoln's head is a chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

Despite repeated attempts to make it work, this former mining town is now nothing but dust and memories.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

A downtown park built on top of unclaimed graves.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A striking public sculpture representing the period of martial law in Communist Poland.

This museum in the tower of the oldest church in Gdańsk, is home to centuries-old time-keeping devices and the world's first pulsar clock.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.