At the privately-operated Gold of Peru Museum (Museo de Oro del Peru); gold, ceramic and textile masterpieces form the most magnificent collection of ancient Peruvian art in the world, treasures little-known and rarely exhibited outside the country. Objects include monumental necklaces, funerary masks, scepters, ceremonial cups, tumis (sacrificial knives), nose rings, earrings and idols, all fashioned of sumptuous gold and semi-precious stones. The downstairs vault features the gold artifacts. The second-floor gallery contains marvelous ceramics and textiles and the annex gallery (behind the main building) features textiles and feather mantos of unbelievable quality.