The Viewing Platform is a landside building. That means that it collects passengers. It costs 7000 AirCoins, collects 20 passengers every 10 minutes and is 2x2. It is an incredibly small landside building, which is why it collects so few passengers. The animation for the Viewing Platform is that the elevator that is in the platform goes up and down and the people on the platform are waving.
Collects 20 passengers every 10 minutes
Passengers per minute: 2