This is one I've looked into myself. I even went to the site way back in 2004 but back then I wasn't aware of what I am now and wasn't really such an enthusiast. Had I known what I know now I may have had a chance of spotting it.
While I can't tell you its exact whereabouts right now I can share my research into it which you probably already know but just in case and for others.
Future World was originally planned to open in in the mid 90s but the Asian Financial Crisis hit at just the wrong time for the park. The park began construction and even had rides set up and concrete poured but every thing stalled in 97 and it all got pulled down around 1999
I have heard from various sources the coaster was at least partially set up but I've never seen anything conclusive.
Here is some concept art from the original park.
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And here's the site of the park from 2004 a full 5 years after it was pulled down.
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There was even a monorail that ran round to the front of the mall from to the park at the back. That was still there when I visited but seems to have been removed when they redid the front of the mall. sometime between then and 09
This post from earlier this year on a Thai Coaster page on FB (
Source) Suggests at least some ride parts were placed behind the Index Mall at Future Plaza.
"That was the neighborhood when the kid saw it from the start of construction. It was almost a tad. Some tracks have been seen behind the index of index livingmall. Not sure if it's all gone now."
There was nothing outside for years but after they re-did the front of the mall for a 2nd time in 2014 some stuff appeared out the back of the index livingmall.
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Its really tough to tell what this is. Its the wrong colour for the monorail but it does match the white supports of the coaster. Hardly conclusive though.
These parts stayed on site until 2017 when they were removed and the area turned into a coach park. Annoyingly the Google Street View image is taken just a couple of months after the parts were removed (DAMMIT) meaning any conclusive proof either way using that is impossible.
Sadly all that's left of the original park site now is this tiny bit of ground now used for some off road parking at the newly installed sports pitch.
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Its all a little abstract I'm afraid but its the best I've got so far