How many ice rinks are enough?

I've lost track of how many pop-up ice skating rinks are opening in the L.A. area this fall. The latest release to hit my in-box is for a sheet of seasonal ice on the grounds of the W Hotel in Westwood. That's not the strangest venue I heard of this weekend, though. You can also skate outside the walls of the Tower of London, and it looks as if plenty of people were taking advantage earlier today.

LA Observed photo: Sean Roderick