The diamond or spinning spider web is the big draw at the Mary O'Malley Waterfront Park and Playground in Chelsea. There is nothing like it anywhere, ever. The diamond can get up to speeds of 1000 miles an hour, suspending you horizontal and putting you and everyone around you in great danger. Kids start yelling "stop, stop" when they're about to be flung into the Mystic. "Smell the sea and feel the sky. Let your soul and spirit fly into the mystic." So much fun.
There is also a nice tot spot, lots of shade and picnic tables. Plenty of parking too. A big thumbs up for yet another park in the tiny city of Chelsea.
After spinning on the diamond, take a peek under the Tobin. Creepy, but also fun.