When I first came to Coha, I had no time to climb up and have a bird's eye view of the city. This round trip, staying for 24 hours, and climbing the round tower specially, is also a supplement to the last regret. Copenhagen Card includes this scenic spot. It's 25DKK for adults to buy tickets alone. The circular tower is packed in a pile of civil buildings on the surrounding streets, so it can't take a complete picture of its entire facade - there's nowhere to go back if you take a picture. All the way up the 209-meter-long stone corridor, seven and a half circles around the hollow tower without stairs. The top of the tower is 34.8 metres high enough to give a full view of Copenhagen's ancient Latin area. The top of the tower is surrounded by sketches showing what buildings you can see in your current view. There is an observatory at the top of the circular tower, and there is still an astronomical telescope on display. The astronomical picture around it is not clear. One of the middle floors is in the process of art exhibition. It's nice to have two-dimensional code to scan while walking, and then read the explanation.