It is absolutely impossible to look at this city only from the window, it is necessary to walk around, slowly and at length, getting the atmosphere, so the sightseeing tours of Gdansk are usually walking and bus.
A bus tour of Gdańsk involves sightseeing the main attractions of the city, including a stop on Mariátska Street, where the magnificent St. Mary's Cathedral is located.
Ship excursion
Experienced tourists highly recommend taking a boat tour, which is organized in the local old port. The ship will take you to the peninsula Westerplatte, with the siege of which World War II began, and to the sea fortress Wisloujscie.
Cost of Tours in Gdańsk
The average price of a three-hour sightseeing tour is 430 PLN per group, a six-hour tour with museums is 600 PLN, the route Gdansk-Sopot-Gdynia is 1600 PLN. Some guided tours in Gdansk are conducted in Russian (you can discuss it on the spot at one of the IT offices), or you can hire a Russian guide to give you a tour around the city (price from 50 PLN).
So you don't have to worry about the cost of sightseeing in Gdańsk, get the Gdańsk-Sopot-Gdynia Plus card, which gives you free or discounted admission to many exhibitions, museums, concerts, parks, car rentals and public transportation. The cost depends on the type of card and its validity, and it is sold in all IT points.