Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

An angelic, yet demonic-looking figurine presides over one of Glasgow's most ancient streets.

The pub has been in operation since 1819 on the banks of the Clyde.

A scattered trail of street art adds a pop of color to the city's stark structures.

A small collection of objects of a bygone era hide in plain view.

The ornate structure is part of a building boasting more marble than the Vatican.

The oldest inn in England served brew to the crusaders.

One of the largest wooden ships ever built is honored by a steel sculpture evoking her once-superlative scale.

The world's largest public collection of PEZ memorabilia.

Many of the most significant figures in American history once hopped on a stagecoach in this alleyway on their way to more noteworthy destinations.

Delaware's first railroad lasted only five years and spanned only 16 miles, but its ticket office has survived for two centuries.

A sculpture made from recycled materials and hand-blown glass dedicated to transportation and transformation.

In October 1856, Harriet Tubman escaped arrest at this site while attempting to reunite an enslaved woman named Tilly with her fiancé.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

This relic is one of the last survivors of the earliest eras of the American railroad.

A real flying saucer, contracted by the U.S. Air Force.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

Giant trolls run this farm!

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

The childhood home of the Wright Brothers in Dayton.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

This picturesque cottage was the site of Ulysses S. Grant’s final and perhaps most important campaign.

A mysterious echo seems to defy the laws of acoustics.