They say the acoustics of this Ming Taoist temple, with wonderful views of the Yellow River, were so excellent that performances held on its stage were audible on the other side of the river in Shaanxi (Shǎnxī) province. Sadly, the stage is unused today. You can't miss the temple: from Qìkǒu’s main road, head up any number of old cobbled pathways up the hill, via the odd courtyard or two.