I want to play on the swing

I have never outgrown my childhood love of swings. In my teens and 20s I spent a fair number of weekends in Portland, Oregon, whose city parks all featured big, sturdy steel-pipe swings that must have been fifteen or twenty feet high.

Does anyone know of any such thing anywhere in the Boston area? The best I know of is a swingset in Lexington, that's sturdy enough but only about 12 feet high.

Thanks in advance!