Backstreet Pizza is a basement pizza shop in Ikseon-dong, near Exit 5 of Jongno 3-ga Station, serving American-style pizza with heavy toppings. Its signature Quarter Street puts four flavors on one pie: Shrimp Gangster, Cheese & Patty Bomb, Pepperoni, and Potato Killer. The dough is crisp and chewy, the toppings and cheese are piled high, and a regular size is enough for three people. The space is underground with dim lighting and vintage and antique decor, suited to eating pizza with beer.