Patrick Dougherty's fantastic living tree sculptures, mind-blowing but temporary.

A historic small-town ballpark that became the on-screen home of the Rockford Peaches in “A League of Their Own.”

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

A spectacular remnant of an Adler and Sullivan masterpiece that was destroyed in 1972.

Indiana’s largest prehistoric earthwork, aligned with the solstices.

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

Where the U.S. government kept its actual treasure, before Fort Knox.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

This statue intended for children to enjoy became a minor political spat.

Dedicated to one of the darkest moments in Irish history.

Tragedy on Little Brewster Island memorialized.

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

These markers are used to document elevation changes around the famed dam.

This 40-room dwelling tucked within a cliff was built by the basin's prehistoric residents.

Home of a French nobleman's short-lived attempt at raising cattle in the Badlands of North Dakota.

Three nine-foot-tall bathing beauties perched elegantly on life-rings welcome visitors to the Alki waterfront.

A wall of chewing gum moonlights as collective art.

This working class sculpture pounds his hammer all the livelong day.

A walk through the historic city center, under the streets of Seattle.

A tunnel of hardened lava along Maui’s famous Road to Hana.