Begin your day by visiting the East Side Gallery, the longest remaining stretch of the Berlin Wall, which has been transformed into an open-air gallery of street art. Then, head to the trendy neighborhood of Kreuzberg, known for its vibrant street art, multicultural food scene, and alternative nightlife. In the afternoon, visit the Pergamon Museum, which houses one of the world's most impressive collections of ancient artifacts. End your day by taking a stroll through the bustling Alexanderplatz, a hub of shopping, dining, and entertainment.