Frederiksborg castle, Rosenborg castle, the little mermaid Copenhagen! The list is extensive, but this will be the essential guide to the most important spots to head to if ur planning a Copenhagen trip! From the iconic Nyhavn to the Amalienborg palace, this list should give you a rapid and efficient overview of what to do in Copenhagen, Denmark. If you have read this far, please consider subscribing so you don't miss any of our other travel guides. Until then, sit back, relax, and enjoy the video!