I went for the 17-20 minutes tour with my teenage girl. I was afraid it would be too short but we had plenty of time to soak it in and appreciate the experience. If you are on the fence because of the cost, do not think in "dollars per minute". It has nothing to do with that. It's the bang for the buck that counts here and it totally delivers! We were both thrilled. Seeing the city, the cars, the boats from this unique platform is amazing.