An'guo Temple sits higher on the mountain than Yiju, reached by a stone staircase that climbs through pine forest before opening onto a terrace with views across the loess plateau. The main hall dates to the Song dynasty in its core structure, though it has been rebuilt and expanded several times since — the eaves, carved doors, and courtyard layout reflect successive layers of patronage rather than any single moment of construction. A small stone stele inside records donations from local gentry across several centuries, a common form of record-keeping in Chinese religious architecture.
The temple functions as the main active religious centre on the mountain, staffed by a small community of Taoist monks who conduct daily liturgy at dawn and dusk. The surrounding terrace makes a good resting point if you are hiking the main summit trail, and the views from here on clear mornings — looking west across the Yellow River valley — are better than from the summit itself, which is often hazy.