More than 800 people showed up at the Glen Foerd on Saturday for Jazz Age on the Delaware, Philadelphia’s newest summer pop-up.

The 1920s-themed event, modeled after the Jazz Age Lawn Party on Governors Island in New York, took place outside the historic mansion on the Delaware River.

Related: Step back in time at Jazz Age on the Delaware

Costumed attendees, dressed in their 1920s finest, set up picnics, played croquet, shopped the vendors selling vintage goods, and danced to the throwback sounds of Drew Nugent & the Midnight Society, the Red Hot Ramblers, the Gin Canaries and more.