The Rotunda of St. George is one of the most beautiful and precious Romanesque buildings in Slovakia. It is situated on a hill near the city of Skalica, on the outskirts of an ancient Slavonic fortress. This was the boundary between the Hungarian Kingdom and the Moravian County. The rotunda was built as a little church of the fortress at the beginning of the 13th century, built from sandstone ashlars. Its semicircular sanctum and circular nave still exist in their original form. Some fragments of a mural painting, representing a motif of the legend of St. George fighting the dragon, are preserved from the Gothic period when the rotunda became part of the fortification system. During the Baroque reconstruction, a cupola with a lantern was added, the entrance was modified, and three windows were put in to give the interior more light. In the year 1970 the Rotunda of St. George was declared a national cultural monument. Nowadays the Museum of Zahorie has a permanent archaeological exhibition there.