I lived in one of those old 3 deckers that you see all around old cities in the NE US. They were built in the 1930s-40s. It was so drafty that in the winter I could literally feel a breeze coming from gaps around the walls.

My house has a basement that is so much cooler than the outside in the summer that if I put on glasses that have been sitting down there and head outside I'm blind from condensation. lol