....a visit to Louis Lunch.

http://www.louislunch.com/index.php

That's where the hamburger was invented.

Pizza and hamburgers, and before it went "modern" and moved two or three
times since I lived in the area, also home of Jimmies, where lobster
rolls were 65 cents, 13 cherrystones were a buck and shucked right
before your eyes, and 20 cents got you a terrific hot dog and 15 cents
more bought an order of handcut homemade fries.