Fairmount Park is the largest in Philadelphia, Pennsylvania. It sits on both sides of the Schuykill River northwest of the Philadelphia Museum of Art. Comparable to New York's Central Park in terms of importance to its host city, the original land was purchased by the City of Philadelphia before the Civil War. Here's a great aerial video of the famous park, compliments of Latitude 360°. The event which he filmed here was a run to benefit research studying on a type of connective tissue tumor.