I like the perspectives you chose to shoot from, they're much better than the angles I chose for those buildings in the past, but all the images are underexposed. I'm not sure if its the exposure or if your white balance is off, but the buildings in 2 & 3 have a yellow cast to them and they should be snow white.
I'm thinking the yellow cast was done in pp on purpose....? Anyhow, I like it! I think it gives the photos a nice soft old feel....which works since the photos are of old buildings. very pretty. Love the angles too!