Every year, Tianmu seems to add just a little more to their Halloween events. I found the Chinese information blog for this upcoming weekend. There is so much stuff listed I don't know where to start with translation, so I might just dig round and see what I can find that is in English already. In the meantime, it looks like things kick off at 3pm on Saturday. Kids can have rides, take part in DIY, and watch different shows from that time.
This all takes place at the intersection of Tianmu East and West Roads, just north of Taipei American School.