I've somewhat neglected the northern reaches of Seattle as of yet... there are lots of nice parks up there. If you're ever at Northgate and have a few moments available to swing, this park is pretty close.
Location: 12th Ave NE between 123rd and 120th St NE.
Number of swings: 2 regular, 2 baby
Ground material: Wood chips
Chain length: Medium-short.
Rubber grips. Yes. I love it when the chains of swings have those nice rubbery grips, giving your hands much traction and alleviating the fear of slipping off. Plus it makes it so your hands don't smell like nasty public park metal afterward. However, swinging on these swings is not for the shy, each swing of the pendulum brings about a loud "CLANG!" from the less-than-tight connecting component. So each swing experience is "CLANG! CLANG! CLANG! CLANG!" And this can be fun, but sometimes one doesn't feel like making loud noises and would rather swing in peace.
How to get there: Bus routes #73, 77, 347, 348 all run along 15th Ave NE.