Lily-Rose and Jack are Depp's children with ex-girlfriend Vanessa Paradis.
Depp and Heard, who recently re-kindled their romance after a brief split, visited the Pergamon Museum, and were dressed in casual, chic outfits, reports dailymail.co.uk.
Depp was seen wearing red striped T-shirt under a sky blue shirt and jeans. The actor paired his outfit with a cowboy hat.
Heard gave tough competition to Depp in style by wearing a chic blue and white striped maxi skirt with buttons all the way down the front.
Heard was also seen with Depp at the promotional events of his movie "The Lone Ranger" in Japan.