THERE are various ways to see Bhutan. A short trip for a week or less will introduce you to the world's last remaining Himalayan kingdom, with visits to the Paro and Thimphu valleys and perhaps an excursion to Punakha, the ancient capital. In Paro you can visit the Ta Dzong National Museum, with its fascinating collection of art, relics and artefacts; the ruined fortress of Drukgyel Dzong where Bhutanese warriors fought several times against invaders from Tibet and where Bhutan's sacred mountain, Chomolhari, towers above the ruins into the sky. One of Bhutan's most famous pilgrimage sights, Taktsang or the Tiger's Nest, clings to a 3000 ft high cliff above the Paro valley; it is the place where Guru Rinpoche is said to have flown on a tiger when he brought the Buddhist Dharma from Tibet and India.