For the first time, you can get so close to Niagara Falls, that you can actually feel them. A century-old tunnel, 180 feet below takes you to an underground world and a view like never before.
You have probably heard of and seen vertical wind tunnels for indoor skydiving that allow people to move around freely while being suspended a few feet in the air. They seem like a lot of fun and a company, Windoor, has taken that and ran with it.