Being home to the oldest monarchy in the world, a popular attraction is Amalienborg Palace, the winter residence of Queen Margrethe II that sits in the center of Copenhagen. Other attractions include the The Little Mermaid and Tivoli Gardens. Alternatively, take a canal tour that passes by many of the popular sights. The area of Frederiksberg is Copenhagen's theatre district. and has many green parks and shopping areas, as does Østerbro. where you'll find the longest pedestrian street in the world. Nørrebro is Copenhagen's multicultural area and is a hub of cafes, shops, restaurants and nightlife.
Book your city break to Copenhagen for the summer and experience "white nights"; the period when the sun is still out at "night-time". That way, you get to stay out late and experience more of what Copenhagen has to offer.