▁slightly ▁before ▁it ▁tap ers , ▁giving ▁it ▁an ▁ob long ▁appearance . ▁For ▁struct ural ▁consideration ▁in ▁a ▁high ▁se ism ic ▁zone , ▁the ▁tower ▁sh aft ▁evol ves ▁from ▁a ▁square ▁to ▁a ▁convex ▁plan ▁with ▁corners ▁car ved ▁out ▁to ▁further ▁reduce ▁the ▁considerable ▁bulk ▁of ▁the ▁tower ▁and ▁to ▁soft en ▁the ▁scale ▁contrast ▁with ▁the ▁surrounding ▁resident ial ▁to wers . ▁At ▁the ▁top , ▁an ▁executive ▁club ▁is ▁located ▁within ▁a ▁giant ▁" pe ar l " ▁that ▁measures ▁ 5 0 ▁meters ▁in ▁diameter . ▁The ▁p ear l ▁is ▁the ▁j ew el ▁in ▁the ▁crown ▁of ▁this ▁mixed - use ▁development . ▁ ▁See ▁also ▁List ▁of ▁tall est ▁buildings ▁in ▁China ▁List ▁of ▁buildings ▁with ▁ 1 0 0 ▁flo ors ▁or ▁more ▁ ▁References ▁ ▁Category : Build ings ▁and ▁structures ▁in ▁Sh eny ang ▁Category : Build ings ▁and ▁structures ▁under ▁construction ▁in ▁China ▁Category : Sk ys c rap ers ▁in ▁L ia oning ▁Category : 2 0 1 8 ▁in ▁China ▁Category : Sk ys cra per ▁office ▁buildings ▁in ▁China <0x0A> </s> ▁R iff el al p ▁is ▁a ▁ham let ▁in ▁the ▁municipality ▁of ▁Z erm att ▁in ▁the ▁canton ▁of ▁Val ais . ▁It ▁is ▁located ▁at ▁a ▁height ▁of ▁ ▁above ▁sea ▁level , ▁just ▁above ▁the ▁tree ▁line , ▁approximately ▁half way ▁between ▁the ▁town ▁of ▁Z erm att ▁and ▁the ▁Gor ner gr at ▁mountain . ▁Once ▁the ▁site ▁of ▁the ▁pr