Built by Sam Hill as a tribute to the soldiers of Klickitat County who lost their lives, Maryhill's Stonehenge is the first monument in the USA to honor the dead of World War I. The structure is a full-scale replica…

Another super-cool bridge shadow here, belonging to the Hernando Desoto Bridge. Built in 1972 it carries the I-40 across the Mississippi River in Memphis (it's actually right next to the previously posted Memphis Pyramid). Memphis has a total of four…

The Louisiana Superdome is the home of the New Orleans Saints, and with a dome diameter of 680 feet (210 meters), it is the largest domed structure in the world. Thanks to Andrea and Jeff Fuchs.

The Inco Superstack is the tallest chimney in the Western hemisphere. Wikipedia says: The Superstack sits atop the largest nickel smelting operation in the world at Inco's Copper Cliff processing facility in the city of Greater Sudbury. It was constructed…

Very close to each other near Walnut Grove CA, are three utterly enormous communication towers. Firstly is the Channel 40 Tower which stands at 608.7 metres, then just a little South is the Hearst-Argyle Tower which stands at 609.6 metres…

Kennywood Park is Southwest Pennsylvania's amusement park, and was known as the "Roller Coaster Capital of the World" in the 1970s for its collection of excellent wooden coasters. Scott Ventura (who seems to know quite a bit about this park!)…