Great Colonnade at Apamea columns display two main designs: a plain one, and the distinctive spiral-flutes. Archaeologist Jean Lassus argues that the former dates back to the Trajanic period, while the latter to that of Antoninus Pius. The colonnade's porticoes were paved with extensive mosaics along the full stretch of the colonnade. Under the Byzantine Emperor, Justinian I, several parts of the colonnade were restored. The street was narrowed to by adding a sidewalk on either side. Several stretches of the street had their Roman pavement replaced with a new pavement made of squared blocks of limestone. The new pavement also covered a completely
Mill Colonnade 1871-1881. The original design called for a two level colonnade, but a lack of funds restricted it to one level. Construction proceeded very slowly and costs grew higher. The structure was initially reviled by critics and compared to a bed of carrots or a bowling alley; at the time it was finished, many believed it had blemished the center of town. The Mill Colonnade was extended in 1893 to include the Rock Spring. The structure was restored in 1982, and stone reliefs portraying historic moments in Karlovy Vary history were added to the orchestra space in 1995-1996. By 1949, the