It sits on the subway, which makes it the easiest of the booked sights to add to a day. The Confucian temple next door is the quieter neighbor if the incense smoke is enough.
Beijing · 雍和宫
Lama Temple
Incense, courtyards, and a tall Buddha in the last hall. People are worshipping. Dress so your shoulders and knees are covered, and do not treat the halls as a backdrop.