As of 2026, the title for the highest water slide in Spain is held by Cyclón, located at the Aqualandia water park in Benidorm. Standing at a staggering 36 meters (approximately 118 feet) tall, this record-breaking "Vortex" or funnel slide offers a terrifying drop followed by a high-speed entry into a massive 20-meter wide funnel. Another notable contender for the "tallest" experience is The Devil's Drop at Aquarama in Benicàssim, which stands at 30 meters and is famous for being one of the steepest kamikaze-style slides in Europe, creating a sensation of near-total freefall. While Siam Park in Tenerife is often cited as the best water park in the world, its most famous slide, The Tower of Power, stands at 28 meters—slightly shorter than Cyclón but arguably more intense due to its transparent tunnel passing through a shark-filled tank. For adrenaline junkies visiting mainland Spain, the skyline of Benidorm remains the premier destination to find these massive, gravity-defying aquatic structures that test the nerves of even the most seasoned thrill-seekers.