PHILADELPHIA, Pennsylvania (WPVI) -- 100 years ago, residents banded together to restore Wissahickon Valley Park after a harsh winter. 'Friends of the Wissahickon' has kept growing since.
Today, the nonprofit is a hub for volunteerism and community service projects, such as reintroducing native plants to the gardens outside of Thomas Mansion.
Watch the video above and visit their website to learn more.
RELATED: A wooded wonderland awaits at the Mt. Cuba Center in the hills of Hockessin, Delaware