Five Guys expanded nationally in 2003, and has since opened more than 1,500 locations | Courtesy of Five Guys
Five Guys keeps it simple with a menu of burgers, hot dogs, shakes, and fries | Courtesy of Five Guys
The off-menu patty melt is basically a grilled cheese with a burger inside it | Kevin Alexander/Thrillist
Milkshakes are uniformly great, but the Elvis is King | Courtesy of Five Guys
Burgers are customizable, allowing you to choose your own adventure | Courtesy of Five Guys