Indeed, when you visit Warsaw you can't miss this place, as it's one of the most beautiful parks you will have a chance to see :)) full of green - so easily feel relaxed. You can also 'meet' and feed squirrels, peacocks. See the old architecture inside Lazienki Park as well. No entrance fee. From spring to autumn you can listen to Chopin concerts outdoors. Just take a chance and have a long walk in this place, you won't regret.