The Main Square is surrounded by old brick buildings ("kamienica") and palaces, almost all of them several centuries old. Most buildings have acquired a neoclassical look over time, but the basic structures are older and can be seen in their doorways, architectural details and interiors. Vast medieval cellars of the buildings are used as pubs, restaurants and cabarets. The square is lined with many restaurants and cafes. One of the most renowned, "Pod Palmą" (Under the Palm) at Krzysztofory Palace, was opened in 1876 by Antoni Hawełka, a purveyor to the imperial court in Vienna. It is the location of the Historical Museum of Kraków, above. Among the many tourism-oriented venues there is also the International Centre of Culture. Probably the most famous of the oldest establishments is the Wierzynek's restaurant, remembered for the great feast of 1364 which, according to the legend, lasted for twenty one days and helped to reach a consensus between the monarchs of Europe.