13th annual Maifest block party on the 700 block of South Street. German food, 10

Annual Rittenhouse Row Spring Festival presented by INFINITI — Walnut Street from 15th to 20th.

Philadelphia's largest Kentucky Derby party — an all-day street festival in Headhouse Square with live

Fully seated, champagne-fueled daytime party with an all-female DJ lineup headlined by DJ Freezy of

Two guided tasting concerts — wine with classical piano (1-3 PM) and craft beer with

F1 Arcade Philadelphia hosts a Miami Grand Prix watch party with live race coverage, open

Four films commissioned by the Calder Foundation in 2017 — by Agnès Varda, Lucy Raven, Rosa Barba, and Ephraim Asili — screen continuously at Calder Gardens through May 31, free with admission.

Student percussion ensembles from across Philadelphia perform in a free public showcase. Co-hosted by Musicopia

The Philadelphia Zoo opens the public phase of its $85 million Remember the Future campaign

Calder Gardens launches its new Listening Circles series with Denise Dunkley of the Nanticoke Lenni-Lenape Tribal Nation and special guest Mirian Masaquiza Jerez of the United Nations Permanent Forum on Indigenous Issues. Free.