Yes, it is a diner. But more importantly, you have all seen the inside because this is the diner where Jerry and his friends met in almost every episode of Seinfeld. I had to start the Tour with this photo taken by Amy in 2006.
NW corner of 34th Street & 8th Avenue
SW corner of 17th street & 3rd avenue, Manhattan
NE corner of 52nd street & 8th avenue, Manhattan