Twin Peaks Piercing the Clouds is one of the traditional Ten Scenes of West Lake, less a single object than a named way of seeing Hangzhou's hills. In damp or misty weather, the paired peaks appear and disappear above the lake country, which is exactly the poetic point.
Treat it as a scenic frame while exploring the western side of West Lake rather than a box to tick at one coordinate. It makes most sense on a slow day of temples, tea fields, causeways, and viewpoints, when Hangzhou's old landscape language starts to feel less abstract.