Want an incline and a view without shelling out nearly $25 for 10 minutes?
Go skiing instead.
They have package deals where you can go to the observatory and the planetarium thing, but it'll cost you like $70 per person.
Total waste of money since the Olympic park is boring.
Having been to the Beijing Olympic Stadium I can say that this one is boring and outdated.
But, it's a piece of history, hence the 3 stars.