Kathmandu is rich in temples, buddhist stupas, medieval palaces and shrines. Modern day Kathmandu covers much of the Kathmandu Valley. At its heart are three ancient city states: Kathmandu, Patan and Bhaktapur. In each of these well-preserved centres, life has changed little in several hundred years. The quality of architecture, carvings and castings which survive in abundance are among the best in the world. A number of hindu and buddhist festivals are held each year in different parts of Kathmandu - as well as more widely in Nepal. Depending on the time of your visit, you may see Kumari, the living goddess being paraded in her chariot through the streets of the capital or the Holi festival during which youths shower one another on the streets in bright red vermillion powder.