Twin peaks are the Northern Peak and Southern Peak. One locates southwest to the West Lake and the other locates northwest. 

Northern Peak is with an elevation of 256.9 meters, Southern Peak is with an elevation of 355 meters. The two peaks face each other at a distance of more than 5 kilometers. On a drizzly day in spring or autumn, visitors may find a spectacular view of the two peaks while they look up from the Hongchun Bridge. It seems as if an enchanting landscape painting was hanging before them with the peaks disappearing and appearing amidst drifting clouds. 

It  is one of the 'Top Ten Sights of the West Lake'.