Celetná Street (Celetná ulice). This street was named after the plaited bread rolls that were first baked here in the Middle Ages. It is also one of the oldest streets in Prague, and was once on the Royal Route. There are lots of architecturally and historically important houses, such as At the Three Kings, At the White Lion, At the Black Sun and At the Vulture. Its attractively decorated baroque facades conceal, in many cases, Romanesque or Gothic foundations, but an exception is the Cubist House of the Black Madonna. Most of the buildings are now converted into wine bars, restaurants or museums. House signs, which used to identify Prague houses in the past, are still visible on most buildings here.