Complex sentence: The main religions in Kathmandu as in the rest of Nepal are Hinduism and Buddhism, although there are minorities of Kirats, Sikhs, Jains, Muslims, Baha'ais, and Christians.
Split into simpler sentences: The main religions in Kathmandu, as in the rest of Nepal, are Hinduism and Buddhism. There are minorities of Kirats, Sikhs, Jains, Muslims, Baha'ais, and Christians.