Siam Park is a Loro Parque-owned water park in Tenerife, Canary Islands, Spain. It is located on the TF1 highway in Costa Adeje. At 18.5 hectares (46 acres). Siam Park features a Siamese theme, and claims to be the most spectacular water attraction in Europe,. The park was opened by Her Royal Highness the Princess of Thailand Maha Chakri Sirindhorn.