Bob Burnquist has built the world's largest backyard toy ... a giganto skateboarding ramp that is "approximately 360 feet long."
Here's more .. "the ramp is 75 feet high at its apex. That is where riders begin their run, speeding down a 180-foot-long roll-in to a ramp that launches them across a 70-foot gap with trapeze netting below. Landing on a 27-foot sloped section, they then boost up to 50 feet above the ground from a 30-foot quarterpipe. A shorter route begins with a 55-foot-tall platform leading to a 50-foot gap, and the 30-foot quarterpipe."
Check the video here.