I've always been a fan of maps, especially deck and floor plans, especially especially free plans and especially especially especially accurate plans.
Fortunately, there is a resource not many people seem to know about; the Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey hosted by the Library of Congress. These were research projects into building of historical worth. They are largely in the public domain (check to be sure) and likely paid for by your tax dollars so I am glad to show them off.
The first floor plan I will feature is Lucy, the Margate Elephant. Only one plan of Lucy is really needed. Goodness knows what you would use her for in your games, maybe a mad elephant-themed Silver Age supervillain. I have simply added a 5' grid to the picture.
In essence, I have altered this very little. If there turns out to be real interest, I can buff this and following maps up a bit...
