The delightfully attractive city of Amsterdam is home to many of the world's great art treasures, and is a major center of the glamorous diamond trade as well. Unique architectural styles of the past blend with superb modern structures, and the web of curved and straight canals makes the city as easy to traverse by water as by land. The hospitality of the local people has been remarked upon by generations of travelers, and the Dutch's respect for and tolerance of the beliefs of others has attracted refugees from around the world for centuries.