Free kayaking weekends and holidays mid-May to mid-October, and on many weekday evenings, weather permitting. No experience necessary. Bring a bathing suit or shorts/T-shirt, & a lock if you have one.
Radegast is technically not outdoors, but about 80% of the roof opens up so an actual breeze can be felt, and a nice outdoors style sunburn could be obtained. Great beer and German sausage selection.
Great rooftop bar on the river. Take a cab there or you'll get stuck trying to cross on the pedestrian foot bridges on 25 or 34th
Take a stroll on an unseasonably warm day through the private gardens that are open to the public.
