Spring is in the air … and at the Philadelphia Zoo. In a partnership with the Pennsylvania Horticultural Society, the zoo is ready to refresh, revitalize and reimagine its 42-acre gardens.

The zoo will be celebrating its 150th grand opening anniversary in style on July 1. A brass band will greet guests as they enter from 9:30-11:30 a.m. Dietz & Watson will also be selling $1.50 hot ...