Tourists visiting Bhutan can enjoy unique experiences such as trekking in the Himalayas, visiting ancient monasteries and dzongs, attending local festivals like the Paro Tsechu, and experiencing traditional Bhutanese culture and cuisine. Bhutanese are skilled workers in metals, wood and slate carving, and clay sculpture based upon Vajrayana Buddhism. Marvelous works can be seen from the beautiful architects of ancient Dzongs or fortresses, temples, houses and other artifacts (made of wood include bowls and dishes, some lined with silver). The Bhutanese attire is very colorful and beautiful, which is worn proudly by the Bhutanese. Bhutan being blessed by many religious saints have contributed to many artifacts however major works is attributed to Zhabdrung Ngawang Namgyal, who unified Bhutan in the 1620s. Our monarchs have contributed to the preservation and renovation of artifacts; and have founded many new ones also.