A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

A diminutive plaque recalls the treetop sniper who almost killed Abe Lincoln.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

A preserved 18th century homestead in Western Pennsylvania marks the spot where the Whiskey Rebellion began.

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

True to his word, George Swanson is buried in his white 1984 Corvette.

Despite violent work crews and massive delays this abandoned canal tunnel was built to last into the modern day.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

This museum is dedicated to the first coast-to-coast highway.

The hometown of movie legend, military officer and All-American guy next door, honors this great actor.

The first of Lancaster's "rural cemeteries."

In this cemetery stands the country's first public crematorium.

Human skulls and a stuffed goat made into a rocking chair can be found at this strange little store.

Home to a giant switchblade and one of the world's largest collections of pocket knives, this museum is a cut above the rest.

A museum preserving one company’s history of preserving food.

The humble home where the famous beat author lived briefly and wrote one of his most famous works.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

Once forgotten and built over, this historic Black cemetery now houses a poignant memorial.

Surrounded by traditional homes, this Tolkien-esque dwelling stands out on a quiet street in suburban Maryland.

A library of only unpublished manuscripts.

The Virginia farm where John Wilkes Booth met his grisly end is now largely forgotten.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.