One of Paris' oldest patisseries, Ladurée has been around since 1862 and first created the lighter-than-air, ganache-filled macaron in the 1930s. Its tearoom is the classiest spot to indulge on the Champs. Alternatively, pick up some pastries to go – from croissants to its trademark macarons, it’s all quite heavenly. A three-course children's menu costs €19.