Yellow Top Mar 6, 2013 The Boston hydrants are a lot like the ones in NYC, only with yellow tops. This is the one outside my hotel near Copley Square. Share this:Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to share on Tumblr (Opens in new window)Click to share on Pocket (Opens in new window)Click to share on Pinterest (Opens in new window)TAGS: Boston | Hydrant Hit me backCancel reply