RUINS, a term particularly used for magnificent buildings fallen into decay by length of time, and whereof there only remains a confused heap of materials.—The most remarkable ruins, now existing, of whole cities, are those of PALMYRA and PASSAPOLIS; of the grandeur of which, some idea may be formed from the views given in Plate CCLIX.—The magnificent ruins still remaining in Rome, Athens, &c. of particular edifices, as temples, palaces, amphitheatres, aqueducts, baths, &c. it were endless to enumerate, and beyond the plan of this work to represent.