What are the tourist attractions worth visiting in Copenhagen?

Copenhagen has the following tourist attractions worth visiting. The following itinerary is for reference only:

Day 1: You can start from the Little Mermaid in the north of Copenhagen, go down to the castle, and go to Giffin Fountain, Frederick Church, Arthur Merlin Palace and Newport. Then watch the sunset and taste delicious food in Xingang.

The next day: Depart from King's New Square and go to stoget, a pedestrian street. After shopping in Strogi, you will arrive at Andersen's Fairy Tale House and City Hall.

Day 3: Visit Rosenberg Palace in the morning, and then go to the city of experimental museum. The city of experimental museums is located in Christianshavn, Christianschavn, Copenhagen, where children and adults can experience various forms of science and technology.

Day 4: Spend a beautiful and romantic day in the port of Christian, and end this fairy tale trip in the sunset of the port. Kristiansand is an artificial island built by Christianshavn in the early 7th century. City planners imitate Dutch cities and plan many canals in this area, which is unique among Danish cities. Rows of colorful houses and docks docked in the river are a beautiful scenery. The guardrail on the bridge is covered with love locks, which symbolizes the eternity of love. Many local people by the river drink and chat here and enjoy the scenery. There is an ice cream shop by the bridge. All kinds of ice cream are delicious. There are high stools and arbor in front of the store for tourists to rest and enjoy the scenery. Another highlight of the island is our Savior's Church, which is unique in that it has a spiral spire surrounded by stairs, from which you can climb to the top and enjoy the beautiful scenery of downtown Copenhagen.