400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

Built in 1869, this now-retired structure looks more like a medieval fortress than a county lock-up.

This diner serves Route 66 nostalgia and what it claims is the 'original' hot dog on a stick.

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.

Abraham Lincoln's likeness rests at the top of this giant totem pole.

This colorful monument commemorates a little-known story from the life of Abraham Lincoln.

Today this bizarre rooftop phone booth seems like a piece of kitsch but it was once used to spot disastrous storms.

The world's largest covered wagon is piloted by a giant Lincoln lawyer.

This tiny historic jail along Route 66 is the perfect fit for exactly one criminal and their partner-in-crime.

This 4,000-acre restored grassland in northern Illinois is home to a range of native flora and fauna, from clovers to plovers to a herd of bison.

Hundreds of fiberglass structures line the side of the road in the middle of nowhere.

The face of a woman pushes its way through the earth.

The oldest functioning restaurant in the state of Illinois, operating since 1847.

A small museum celebrating the fiberglass giants that are icons of America's highways.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

A terrific purveyor of natural history objects and curios.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

New York's transit system peddles terrible food in limited windows—this restaurant is a rare exception.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.