This pre-Revolutionary War grist mill ground corn and flour for soldiers in seven American wars.

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

An overlooked tribute to one of the most important peace deals in American history.

Live data is transmitted from the Atlantic coast to instantly recreate the ocean waves in this fountain at the NOAA headquarters.

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

This tower-tomb honors a president who only held office for a little over a month but dedicated his life to his country.

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

Climb inside an iron crystal magnified 165 billion times its normal size.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.

Perched atop a brick smokestack, this enormous lug nut symbolizes the local minor league baseball team.

A whopping 14,000 copper coins cover this miniature fighter jet.

At this farm in upstate New York, the former president plotted his reelection campaign.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The first memorial dedicated solely to the Black troops who fought for the Union.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

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

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

A super-sized promotional trick that is now a D.C. landmark.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The largest ancient burial mound in Ohio.