Some of Zeta's biggest and beautiful houses, IMO:
Beta Omicron Chapter - University of South Carolina
http://www.zetataualpha.org/content/...etaOmicron.pdf
Zeta Xi Chapter - Georgia Southern
http://www.zetataualpha.org/content/.../Ga_ZetaXi.pdf
Gamma Pi Chapter - University of Georgia
http://www.zetataualpha.org/content/...Ga_GammaPi.pdf
Alpha Upsilon Chapter - Oklahoma State
http://www.zetataualpha.org/content/...phaUpsilon.pdf
Theta Eta Chapter - Stephen F. Austin State
http://www.zetataualpha.org/content/...x_ThetaEta.pdf
Gamma Phi Chapter - University of North Texas
http://www.zetataualpha.org/content/...x_GammaPhi.pdf
Kappa Chapter - University of Texas @ Austin
http://www.zetataualpha.org/content/...s/Tx_Kappa.pdf
Theta Phi Chapter - California State, Fullerton
//http://www.zetataualpha.org/content/housing/map_pdfs/Ca_ThetaPhi.pdf
Alpha Xi Chapter - Indiana University
//http://www.zetataualpha.org/content/housing/map_pdfs/In_AlphaXi.pdf
Theta Tau Chapter - UNC
http://www.zetataualpha.org/content/...C_ThetaTau.pdf
Delta Kappa Chapter - LSU
http://www.zetataualpha.org/content/...DeltaKappa.pdf
Gamma Zeta Chapter - Mississippi State
http://www.zetataualpha.org/content/..._GammaZeta.pdf
Beta Gamma Chapter - Florida State
http://www.zetataualpha.org/content/..._BetaGamma.pdf
Eta Kappa Chapter - University of Central Florida
http://www.zetataualpha.org/content/...a_EtaKappa.pdf
Iota Omega Chapter - University of Maryland (where my chapter did Initiation a few times)
http://www.zetataualpha.org/content/..._IotaOmega.pdf
Ok, sorry I listed so many but there are so many Zeta houses to choose from that are all beautiful. I can't tell you which one is the biggest but I'm sure it's one of those. Makes me wish my chapter had had a house