English Gothic architecture Exeter Cathedral is built in this style, as is the crossing of Ely Cathedral, (including the famous octagonal lantern, built between 1322 and 1328 to replace the fallen central tower), three west bays of the choir and the Lady Chapel. In Scotland, Melrose Abbey was a noteworthy example, though much of it is now in ruins. The Perpendicular Gothic period (or simply Perpendicular) is the third historical division of English Gothic architecture, and is so-called because it is characterised by an emphasis on vertical lines. An alternative name, the Rectilinear, was suggested by Edmund Sharpe, and is preferred by some
Porth-y-Tŵr and rooms adjoyning to it where the Bishop's & Mayor's courts were held". Porth-y-Tŵr was in ruins by the 20th century and, in 1929, the octagonal tower was substantially restored by ecclesiastical architect W. D. Caroe, with funding coming from an anonymous donor. In the 1930s a ring of bells were installed in the octagonal tower – the bells in the tower of St Davids Cathedral had been removed in 1730 to prevent the cathedral's tower collapsing. Two further bells were added in 2001, donated by the American Friends of St Davids Cathedral. There are ten bells in total, ranging