First off, if you don't already know about Shorpy, it's a great site and you should poke around some. I came across this 109 year old photo of Mrs. Surratt's boarding house, which is where the Lincoln conspirators met.
I was curious what was there now. It actually occurred to me that the boarding house might not rise to the level of a national historical site. And boy was I right. Wok and Roll, baby!