One of Poland's oldest cities, Torun was once also one of the largest, as evidenced by its plentiful Brick Gothic, Baroque, and Mannerist architecture. Fortunately, Torun escaped World War II intact, so everything in its center is original, down to Nicolaus Copernicus' birthplace. Torun's beautifully preserved, UNESCO-listed Old Town (with its massive cathedral) is the main reason to visit. Take your time exploring the center, its medieval Gothic buildings, walls, and towers (one of which is leaning) will reward you. Be sure to check out Torun's famed, elaborate gingerbread (which naturally has its own museum, where you can learn to bake it). The city isn't just known as "The Gingerbread City" due to its characteristic red brick architecture!