I searched in google maps for playgrounds, and this one came up - first picture looked underwhelming, but if you look at the other photos, they have some cool climbing stuff!

Playground https://maps.app.goo.gl/5yzQHHEYPFJ5hj4NA?g_st=ic

The Alden Play Area in Cambridge looks little, but fun:

Playground https://maps.app.goo.gl/DFQmmJvwBC1LnMti9?g_st=ic

This one is very different:

Alexander W. Kemp Playground (617) 349-4800 https://maps.app.goo.gl/UGjs4t5yFAjQdjTC7?g_st=ic

Nearest and dearest to my heart and ancestral homeland (and recently redone):

Central Hill Playground https://maps.app.goo.gl/bEM2PTgfQmxCKUjf7?g_st=ic

Damn you, OP! I have fallen down a playground rabbit hole!