Fallingwater, a house built over a waterfall, was designed by Frank Lloyd Wright. Information can be found at these sites:
http://en.wikipedia.org/wiki/Fallingwater (good pictures of house here)
http://www.paconserve.org/index-fw1.asp (official site)
http://www.mocpages.com/moc.php/31871 (Lego version of Fallingwater)
http://en.wikipedia.org/wiki/Battle_of_Antietam
Shepherdstown, WV
Harper's Ferry, WV
To be updated
http://www.fred.net/kathy/canal/canalmapsetc.html#history
http://www.fred.net/kathy/canal/canalplaces.html (places along the canal)