The Cathedral of Saint Peter of Beauvais () is a Roman Catholic church in the northern town of Beauvais, Oise, France. It is the seat of the Bishop of Beauvais, Noyon and Senlis. The cathedral is in the Gothic style, and consists of a 13th-century choir, with an apse and seven polygonal apsidal chapels reached by an ambulatory, joined to a 16th-century transept. It has the highest Gothic choir in the world: (48.50 m) under vault. From 1569 to 1573 the cathedral of Beauvais was, with its tower of 153 meters, the highest human construction of the world. Its designers had the ambition to make it the largest gothic cathedral in France ahead of Amiens. Victim of two collapses, one in the 13th century, the other in the 16th century, it remains unfinished today; only the choir and the transept have been built. The planned nave of the cathedral was never constructed. The remnant of the previous 10th-century Romanesque cathedral, known as the Basse Œuvre ("Lower Work"), still occupies the intended site of the nave. History Work was begun in 1225 under count-bishop Milo of Nanteuil, with funding from his family, immediately after the third in a series of fires in the old wooden-roofed basilica, which had reconsecrated its altar only three years before the fire; the choir was completed in 1272, in two campaigns, with an interval (1232–38) owing to a funding crisis provoked by a struggle with Louis IX. The two campaigns are distinguishable by a slight shift in the axis of the work and by changes in stylistic handwriting. Under Bishop Guillaume de Grez, an extra 4.9 m was added to the height, to make it the highest-vaulted cathedral in Europe. The vaulting in the interior of the choir reaches in height, far surpassing the concurrently constructed Amiens Cathedral, with its nave, and making Beauvais Cathedral the tallest vault of all the Gothic Cathedrals. It is slightly taller than the nave of St Peter's Basilica in Rome at . A formerly often-quoted beginning date of 1247 was based on an error made by an early historian of Beauvais. The work was interrupted in 1284 by the collapse of some of the vaulting of the recently completed choir. This collapse has been seen as a disaster that produced a failure of nerve among the French masons working in Gothic style. The collapse also marked the beginning of an