Do you want to get out of the bustling city and do something from not the guide books? Then grab a bicyle and cycle in about 15 minutes to Sloterpark; a big green, lush park with a nice 2 kilometer long lake in the middle. It even has a beach! Wander around in quietness - if there's no festival going on - or rent a boat to explore the lake from the water. You can even make a picture with the IAMsterdam sign and have a bigger chance of a rabbit photobombing your picture than other people.