Gwynns Falls/Leakin Park is a park in Baltimore, Maryland. It is the second-largest woodland park in the United States, constituting a contiguous area of 1,216 acres (492 ha). Envisioned as a "stream valley park" to protect Baltimore's watersheds, including the Gwynns Falls, from overdevelopment and to preserve their natural habitats. It is well known for the fact that over 75 bodies have been discovered in the park since the 1940s. It is also home to the Baltimore Herb Festival.

Gywnns Falls Trail is a 15-mile (24 km) series of hiking and bicycling trails inside Baltimore, Maryland, named for the Gwynns Falls, whose course it follows, and the surrounding Gwynns Falls Leakin Park it passes through. The trail uses unique alignments, sidepaths on existing streets, and on-street sections. The trail consists of one 10.75-mile (17.30 km) mainline, plus a number of branches, including the Middle Branch Trail, the Hutton Trail, and the Dickeyville Trail. All of these trails carry signage designating them as the Gwynns Falls Trail; their individual names are designated on the mile markers designating their route. The entirety of the Middle Branch Trail, as well as the section of the mainline trail east of the Middle Branch Trail's northern terminus, are part of the East Coast Greenway.