The Mason's Temple is tucked away in central Taipei, right off of one of the train lines. I kept catching glimpses of it from the train, and one day I finally tracked it down, only to find that it was as glorious as I had imagined. My guess on the construction date is late 60s, early 70s. Pretty run down. I'm sure years of acid rain and pollution didn't help much, but the result is a mysterious and groovy building, shrouded in mystery. At least for me.
More photos here.