The Old Town is a well-preserved historic district full of colourful facades and narrow streets. Start your day at the Main Town Hall, an impressive red-brick building from the 14th century known for its astronomical clock. St. Mary's Church, with its towering 78m-high tower, is a visible landmark and is considered the pride of Gdansk. Afterward, wander down Long Street and visit the Golden Gate and Green Gate. The Artus Court should also be on your list, as it used to be one of the most important private courtrooms in early modern Europe. You can also find some great Polish restaurants nearby where you can try Polish cuisine.
Begin your day with a visit to Westerplatte, where the first shots of WWII were fired. Take a guided tour or visit the museum to learn more about this historic event. Return to the city to visit the Museum of the Second World War, one of the most extensive and interactive museums in Europe, with exhibits that span the entire period of the war. Enjoy lunch at one of the nearby restaurants in Old Town before your next activity.
If you have more time, consider visiting the European Solidarity Centre to learn about the history of the Solidarity movement, or the Gdansk Shipyard that was the center of the political upheaval in the 1980s. You can also explore some of the city's local parks, the largest of which is Oliwa Park. Alternatively, if you have less time, consider visiting the Museum of Gdansk, which is located in the heart of Old Town.