Said to be the birthplace of the BLE and now reconstructed/replicated at Greenfield Village. Old photo and history here:

http://www.ble.org/pr/newsletter/0500ne ... tory1.html

Today:

http://home.frognet.net/~mcfadden/wd8ri ... dhouse.jpg

I was looking in the file in the archives where that period photo came from, and pictures of an accident involving some structural damage to a wall were included with no description. It appeared like a whole stall was knocked down.
Seems like roundhouses were prone to damage from overshoots or creeping engines.