A 4.5 meter (15 feet) 
inflatable iceberg for your pool (link no longer works):
Three sides have climbing walls with varying degrees of difficulty – from beginner to expert – and the 4th side is a giant slide.
About the price of a new pool: around $10,000.
You probably have to sign a waiver when purchasing it in case you’re killed while jumping off its top.
I need a giant pool first.