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It looks neat and clean, but I do agree with Nate that the layout can be made bigger say by 10% to 15%.
Roll Over on the building seems to mislead to 3 different sub pages, even though the three are leading to the same page
Automatic change from day to night view might be a bit "hypnotising". I may suggest to have a function to switch from day to night view, and make the background darker when switched to night view to increase the contrast
