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

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

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

A fantastic array of trays and cables once whisked books over to the Capitol at 600 feet per minute.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Decades before the scandal, this staircase on the river was a literal "water gate."

Largest Roman Catholic church in North America.

The walls of the iconic dome are hollow and have a secret stairway.

Home to items never before seen by the public.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

This landmark cemetery in Boston was created more than 300 years ago.

The site of Paul Revere's historic two lantern warning.

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

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Formerly known as National D-Day Museum, this collection commemorates the battles of Normandy and WWII.