I stumbled across this site, oh, maybe two years ago. I’d forgotten about it since then, but stumbled across it tonight. It’s obviously a labor of love.
The thing that I like about it is how it shows the New York that non-New Yorkers (and I suspect many New Yorkers) don’t realize exists. It’s a great site full of great sights. He does tours; maybe some day I’ll get to take one.