Shake Shack sprouted from a hot dog cart in Madison Square Park in Manhattan to support the Madison Square Park Conservancy’s first art installation. The cart was quite the success, with Shack fans lined up daily for three summers. In 2004, a permanent kiosk opened in the park: Shake Shack was born. This modern day “roadside” burger stand serves up the most delicious burgers, hot dogs, frozen custard, shakes and more.