Campanile
2 of the 7 encyclopedias on this shelf carry an entry for Campanile. Both are reproduced below, so you can see where they agree and where they differ.
Aiton's Encyclopedia (1910)
kam-pa-ne'la, the bell tower of Italian cities. It is usually a separate structure. The celebrated leaning tower of Pisa is a campanile. It is eight stories high, each surrounded by a row of columns. It leans thirteen feet out of the perpendicular. Other campaniles are those of Bologna, Padua, Cremona, Ravenna, and Florence. A fine Moorish bell tower erected at Seville, Spain, in 1568, is 350 feet high. It is surmounted by a bronze vane that weighs a ton and a half, yet turns easily in the wind. The campanile of St. Mark's, Venice, was 325 feet high. The figure of an angel sixteen feet tall stood on its summit. It served as a watch tower whence the lookout sighted incoming ships. It was ascended by a winding inclined plane instead of steps. Galileo made many of his observations from this tower. At one time a wooden cage hung half way up, in which prisoners were allowed to starve to death. In 1902 the tower fell with a crash. Antiquarians had a rich find in the brick, some of which was declared to have been brought from Rome as early as the first century. In storied Venice, down whose rippling streets The stars go hurrying, and the white moon beats, Stood the great Bell Tower, fronting seas and skies-- Fronting the ages, drawing all men's eyes; Rooted like Teneriffe, aloft and proud, Taunting the lightning, tearing the flying cloud. It marked the hour for Venice; all men said Time cannot reach to bow that lofty head; Time that shall touch all else with ruin, must Forbear to make this shaft confess its dust, Yet all the while, in secret, without sound, The fat worms gnawed the timbers underground. The twisting worm, whose epoch is an hour, Caverned its way into the mighty tower; And suddenly it shook, it swayed, it broke, And fell in darkening thunder at one stroke. The strong shaft, with an angel on the crown, Fell running; a thousand years went down! --Edwin Markham.
Collier's New Encyclopedia (1921)
a tower for the reception of bells, principally used for church purposes, but now sometimes for domestic edifices. The campanile at Cremona is very celebrated, being 395 feet high. That at Florence, by Giotto, is 267 feet high and 45 feet square. The most remarkable of the campaniles is that at Pisa, commonly called the "Leaning Tower." It is cylindrical in form, and surrounded by eight stories of columns, placed over one another, each having its entablature. The height is about 150 feet to the platform, whence a plumbline lowered falls on the leaning side nearly 13 feet outside the base of the building. The famous campanile of St. Mark's, Venice, begun in 874, completed in 1150, and remodeled in 1517, fell in 1902, but has been re-erected to conform to its appearance in 1517.