The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Wikipedia's[2] Siam Park (Tenerife) entry documents the park opening to the public on September 15, 2008 after construction problems delayed the originally planned 2007 opening.
Wikipedia states Siam Park 'finally opened to the public on September 15, 2008' after the 2004-started, 52-million-euro construction ran past its planned May 2007 opening.
ProSlide's project page confirms it supplied the waterslide technology, including the Tower of Power, shown in the documentary's behind-the-scenes engineering coverage.
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