If you want to ski down the mountainside, you'll need to reach the top of it first. Jump on Gaisbergbahn and enjoy the ride up.
When you've spent a bit of time at this mountainside transportation system in Soelden, why not make your way to Obergurgl-Hochgurgl Ski Area, Timmelsjoch, and Tiefenbach Glacier? They're not far from Gaisbergbahn and also popular with tourists.