A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Inspired by a piece of concrete, these three pyramid-shaped buildings have been beloved Indianapolis landmarks for over 50 years.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.

But did the famous feminist and abolitionist ever really say those iconic four words?

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

The penultimate and final resting places of British General Edward Braddock—minus a few bits and pieces.

The largest burial mound in the United States holds the remains of prehistoric West Virginians.

A historic arena where the Beatles played their first concert in the U.S.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

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.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

The "lovely red Vega" of the legendary record-settling pilot.

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

There’s a hidden military meme engraved on the World War II Memorial.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

First planned industrial community in the United States.

Chicago's largest cemetery is full of beautiful Victorian monuments and more than a few ghost stories.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This modest post office sits on the site of H.H. Holmes' famous murder castle.