THIS BIZARRE LITTLE BUILDING IN the middle of Cambridge holds a colorful history and houses one of the world’s longest-running humor magazines. Sometimes referred to as the “Lampoon Castle,” it was built in 1909 by Edmund M. Wheelwright, who took inspiration from the local architecture of Jamestown, Virginia. From the front it bears an obvious resemblance to a human head wearing a Prussian helmet. As a result, it has drawn much criticism over the years. The comical nature of the building is fitting, for it serves as the headquarters for the Harvard Lampoon.