The centerpiece of Siam Park, located in Costa Adeje, Tenerife, is the "Tower of Power," a vertically-inclined free-fall slide that stands at a staggering 28 meters (92 feet) tall. In 2026, it remains one of the most iconic water attractions in the world. Riders reach speeds of up to 80 km/h (50 mph) as they plunge down a near-vertical drop. The slide's most famous feature is its finale: the open slide transitions into a transparent acrylic tunnel that passes through a giant aquarium filled with sharks and rays. While the physical slide length is approximately 76 meters, the experience is defined by the sheer height and the psychological thrill of the "shark tunnel." To ride, guests must be at least 1.42 meters tall and over 12 years old. The park’s Thai-themed architecture makes the tower look even more imposing, cemented by its reputation as the "King of Water Parks" in Europe for over a decade.