New Taipei City/Panchiao is gone: 25.006816338898204, 121.
Chung-Li still exists – in the middle of a parking lot, years ago it was a lawn.
Taitung is gone: 22.74952303403474, 121.14358164417874
Kaohsiung is gone more than 10 years ago: 22.62539233050074, 120.29786362698584
Another one at a parking lot, StreetView available, rather interesting.
Puli: 23.970872130600227, 120.97029352778827
This one is in the middle of a street, Streetview is available. A small wall separates it. I dunno if kids already tried to climb it…
Jenwu/Tafa 22.70342742313424, 120.36575206877289 coordinates in mwlist point to a power pole standing on a concrete fundament.