Over-the-top features like Tilt, which costs $8 more than the standard admission price of $21, are a draw for Leizhu Morissette, a 19-year-old from Quebec who was visiting 360 Chicago Monday afternoon. She had visited Skydeck, too, but found something extra in Tilt. It's unlikely she would visit three observatories though, Morissette said. Two is fine, but she would likely pick those based on the extra experiences and whatever deal she could find.