I know that the Beta house at KU (since this seems to be the campus of choice at the moment) was home of the man who served as secretary of state under Lincoln during the Civil War. Their house is huge and pretty spectacular on the inside, but doesn't look that impressive from the street. The one thing about KU is that there is no true "Greek Row" more like Greek pockets spread throughout campus.
Beta at Mizzou actually has 2 (two) houses, one for pledges/sophomores and another for juniors and seniors, but I guess that's the kind benefits you get when your alumni include Sam Walton, founder of wal-mart, Ken Lay (well at one point...) and also the guy who founded Hidden Valley Ranch...
Despite having 2 houses there are no pictures to show...However Sigma Chi and Pike have pretty cool houses.
At
Nebraska all the fraternity houses have very different architecture. FIJI is really the only one that seems as impressive as those at KU, but I like the fact that all the house look different. For sororities, AOII, Theta, and PiPhi all have similar looking houses in sort of barn frame shape...and most of the other houses also look more similar than the fraternities do...