This was photographed with an Olympus E-520 with a 14-40 mm. lens.
This was photographed near New London, Wisconsin.
At the time the Octagon House was built in New London, prior to August 1867, it was considered an architectural feat rather than an oddity.
In addition to its eight-sided shape, it was quite a showplace in its time. The parlor was complete with pump organ, plush couches, and large framed portraits on easels. A cupola on the roof is in the center of the house.
This information was gotten from:http://www.historicalvillage.org/buildings.html