Old MacDonald had a farm and shut its doors around 1955. Now the guys are singing e-i-e-i-o as they find historic items in the abandoned barn, house and mill in Westminster, Md. Jay's biggest finds include a bell and a collection of tiles that may be worth $140 each, but Mark is the one making hay when he finds an early radiator oven. The property's owner is on the fence about selling the items until he makes a surprising offer of his own.

With only 60 days to spare before Philadelphia's historic Church of the Nativity is demolished, the Jay, Markand Dan rush to retrieve abandoned treasures from the past 170 years. The guys hit the jackpot when they find floral and Tiffany-style stained glass windows in the sanctuary, and a giant rose window worth $10,000 has Jay saying 'Amen.' But perhaps their most surprising find is vintage parallel bars and the remains of a basement bowling alley.