An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

Tiny observatory made big contributions to the study of the Earth's motion.

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

Berkeley Springs State Park boasts the nation's only monument commemorating presidential bathing.

A star fort along the C&O Canal in western Maryland that protected America in three wars.

A monument marks the location of the first successful steamboat demonstration.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

One of the only memorials dedicated to journalists who died in combat.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

This elaborate towering structure was once famed for its revolutionary height.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The record holder for the world’s largest peach.

A quaint Russian village in the middle of a German metropolis.

Yo, Adrian!

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This series of Baroque passageways in Vienna's cultural center mix old architecture with modern art.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.