The focal point is the Dom Tower , built between 1321 and 1382, which at over 110m is the highest church tower in the country, soaring to a delicate octagonal lantern added in 1380. A guided tour (Mon-Sat 10am-5pm, Sun noon-5pm; last entry 4pm; a?¬3.40) takes you unnervingly close to the top, from where the gap between the tower and the Gothic Dom Kerk is most apparent. Only the eastern part of the great cathedral remains today, the nave having collapsed in 1674. It's worth peering inside (Mon-Fri 10/11am-4/5pm, Sat 10am-3.30pm, Sun 2-4pm; free) to get a sense of the hangar-like space the building once had and to wander through the Kloostergang, the fourteenth-century cloisters that link the cathedral to the chapterhouse, now part of the university. South of the church at Nieuwe Gracht 63, the national collection of ecclesiastical art, the Catharijne Convent Museum (Tues-Fri 10am-5pm, Sat & Sun 11am-5pm; a?¬4.50; www.catharijneconvent.nl ) has a wonderfully exhibited mass of paintings, manuscripts and church ornaments from the ninth century on, including work by Geertgen tot Sint Jans, Rembrandt, Hals and, best of all, a luminously beautiful Virgin and Child by Van Cleve. Further along, the Centraal Museum , Agnietenstraat 1 (Tues-Sun 11am-5pm; a?¬6.80; www.centraalmuseum.nl ) features a good collection of paintings by sixteenth- and seventeenth-century Utrecht artists, including the vividly individual portraits of Van Scorel's Jerusalem Brotherhood. The architecture of the 1920s De Stijl movement is best demonstrated by the Rietveld-SchrA¶der house on Prins Hendriklaan (by appointment only; contact the Centraal Museum on tel 030/236 2310).