Great Colonnade at Apamea overhauled drainage system. Justinian's changes included erecting a monumental "tetrastylon" made up of four high columns with a meter-high capitals. The city, was however, later sacked by the Sasanians under Adarmahan. Great Colonnade at Apamea The Great Colonnade at Apamea was the main colonnaded avenue of the ancient city of Apamea in the Orontes River valley in northwestern Syria. It was built in the second century CE after Apamea's devastation in the 115 earthquake. The avenue, which runs for nearly , made up the city's north-south axis, or the "cardo maximus". The monumental colonnade is among the longest and most
Architectural conservation life and preserving the integrity of architectural character, such as form and style, and/or its constituent materials, such as stone, brick, glass, metal, and wood. In this sense, the term refers to the "professional use of a combination of science, art, craft, and technology as a preservation tool" and is allied with - and often equated to - its parent fields, of historic environment conservation and art conservation. In addition to the design and art/science definition described above, architectural conservation also refers to issues of identification, policy, regulation, and advocacy associated with the entirety of the cultural and built environment.