Archaeologists believe they may have discovered the wooden cross of a Spanish conquistador in Arkansas
The Harmony Borax Works – This mining complex went out of business in 1888 but the remnants of it can still be found
Built in the early 13th and bombarded in the 16th century, this massive Maynooth Castle lies in ruins, now a great tourist attraction
Abandoned Rochester Subway – New York’s rail line that operated in a former section of the Erie Canal