Dzongs are the defining architectural feature of Bhutan—massive whitewashed fortress-monasteries that served historically as administrative, religious and military centres and continue to house both the monastic body and district government offices today. Tashichho Dzong in Thimphu, the current seat of the Bhutanese government, houses the throne room of the King and the Cabinet Secretariat. Its courtyards and whitewashed towers are the ceremonial heart of the capital.
Punakha Dzong, built in 1637 by Zhabdrung Ngawang Namgyal—the man who unified Bhutan—sits at the confluence of the Pho Chhu and Mo Chhu rivers at 1,293 m / 4,242 ft. It served as the seat of government and religion for the Bhutanese state; the first National Assembly was held here in 1953. The dzong is still used for religious ceremonies and is one of the most beautiful in the country.
Paro National Museum (Ta Dzong), renovated and re-opened in 2020, holds collections of Bhutanese art, religious thangka paintings, handicrafts, armour and natural history exhibits. Bhutan's traditional arts—thangkas, woodcarving, weaving and pottery—are practised in traditional workshops and available in markets and craft shops in Paro and Thimphu.
Dochula Pass at 3,100 m / 10,200 ft on the drive from Thimphu to Punakha is the tour's highest road point. The 108 Druk Wangyal Chortens—memorial stupas built by Queen Mother Ashi Dorji Wangmo Wangchuck and consecrated in June 2004—stand in a line at the pass. On a clear day in late autumn or early spring, the panoramic view of the Himalayan peaks including Gangkhar Puensum (7,570 m), Bhutan's highest mountain, is outstanding.