Note that I said “largest urban park SYSTEM,” and not just Fairmount Park proper. But either way, I see your point. Alhough the Greater Philadelphia Tourism Marketing Corporation, among others, DOES refer to the Farimount Park System as “one of the world’s largest city park systems”:</p>
<p>I’ve also seen it called the largest landscaped urban park system in the US, if not the world. In any event–and semantics and relative superlatives aside–you’re right that the Fairmount Park system is quite extraordinary and unique, and really unsurpassed among urban parks (regardless of total acreage ).</p>