The Hanseatic League was a commercial and defensive confederation of merchant guilds and their market towns. Growing from a few North German towns in the late 1100s, the league came to dominate Baltic maritime trade for three centuries. The golden age left many beautiful buildings to the Northern Germany, most of them representing Brick Gothic style.
One of the most picturesque places in Rostock is the Neuer Markt (New Market Square), with the Town Hall - that was originally built in the 13th century in Brick Gothic style, but extensively transformed in the 18th century, with the addition of a Baroque façade and a banqueting hall. The square also preserved six original, carefully restored gable houses from the 15th and 16th centuries. The other historical houses in Hanseatic style that once bordered the square were destroyed in an Allied air-raid in 1942, and rebuilt in a simplified manner.
Střekov Castle (Schreckenstein) is perched atop a cliff above the River Elbe, near the city of Ústí nad Labem. It was built in 1316 for John of Luxembourg, the father of the Holy Roman Emperor Charles IV, to guard an important trade route to Germany. After changing hands several times, the castle was acquired by the Lobkowicz family in 1563. Its strategic importance led to occupations by Imperial Habsburg, Saxon, and Swedish forces during the Thirty Years' War, as well as successive sieges by Austrian and Prussian armies during the Seven Years' War.
Although Střekov Castle was heavily damaged during those conflicts and abandoned as a military installation by the end of the 18th century, the 1800s saw many poets and artists visiting the castle, drawn by a new trend of interest in romantic ruins.