Despite its terrible treatment in the 16th century by Bowes, Layton and the Earl of Hertford, the conventual church survived. The chapter-house is even yet practically entire, and the principal portions of the buildings can be traced. The plan of the church was cruciform, having a presbytery instead of a Lady chapel, a fragment of which is yet standing. There were aisles to nave and choir, while the transepts, which extended only one bay beyond the line of the nave, had each an eastern aisle. Early English work is evident in the choir and transepts, and that of the Early Decorated period in the nave. Connecting the south transept to the chapter-house, is the chapel of St Modanus--so called after an abbot of that name who lived in the 6th century--which still preserves its altar and sedilia, and is lighted by two round-headed windows. A double circle marks the founder’s grave in the chapter-house, above which is a large room. Other parts of the domestic buildings are still in existence--such as the kitchen, refectory and dormitories--all of the Norman Transitional period--besides remnants of the porter’s lodge, dungeon cells and cloisters. With regard to the founding of this abbey, it is thought that the early work is probably a part of the original construction provided for by Hugo de Morville, Lord Lauderdale, and his wife, Beatrix de Beauchamp, in 1150. The new church is particularly interesting inasmuch as it shows how the Scots still held to the round arch long after the remainder of their architecture had become thoroughly Gothic in character, for not only is the 13th century door of the monks built with a round arch, though with purely Gothic mouldings and capitals, but the 14th century west door, built after the burning of the abbey by Richard II., is the same.