Small but mighty, the Little Buse Quest is a snowboard jump training facility in Nagano, Japan open when there is no snow. With an air mat landing system, it's perfect for honing those jumps and tricks in a safe environment. It's a nice cozy atmosphere with a local, friendly feel and a team of great staff ready to help you level up your skills on the slopes.
You can rent everything you need here and is an awesome option for something a little different on your trip. They don't have an English website so just put the site into Google Translate or translate automatically on your Chrome brower.