原(yuan)(yuan)名安(an)慶寺永壽塔(ta)(ta),原(yuan)(yuan)是一座八角落13級(ji)樓閣式磚塔(ta)(ta)。始建于西夏(xia),塔(ta)(ta)建在一高(gao)(gao)出地(di)面(mian)1.5米(mi)的夯土臺(tai)上(shang)(shang)(shang),塔(ta)(ta)底(di)邊(bian)長3.14米(mi),六(liu)層以(yi)上(shang)(shang)(shang)已塌毀(hui),殘高(gao)(gao)約27米(mi),1985年(nian)(nian)(nian)(nian)加固(gu),修后高(gao)(gao)度為(wei)42米(mi)。塔(ta)(ta)身底(di)層較高(gao)(gao),為(wei)6.64米(mi),往上(shang)(shang)(shang)逐層距離漸(jian)漸(jian)縮短。每級(ji)塔(ta)(ta)身都以(yi)疊澀(se)磚作(zuo)挑檐(yan),檐(yan)下每面(mian)正中與轉角處飾以(yi)斗栱,檐(yan)角掛有(you)風(feng)鈴,面(mian)南(nan)辟有(you)高(gao)(gao)1.65米(mi),寬0.65米(mi)的券門可通塔(ta)(ta)室。室內原(yuan)(yuan)有(you)木梯(ti),可逐級(ji)攀(pan)登(deng)遠(yuan)眺。永壽塔(ta)(ta)原(yuan)(yuan)為(wei)鳴沙州(zhou)安(an)慶寺內的主體(ti)建筑,據《重(zhong)修安(an)慶寺碑記(ji)》載:“嘉靖(jing)四十(shi)年(nian)(nian)(nian)(nian)(公(gong)(gong)元(yuan)1561年(nian)(nian)(nian)(nian)),坤道弗寧,震(zhen)動千里,山移(yi)谷變,寺院(yuan)傾頹。”《重(zhong)修鳴沙州(zhou)安(an)慶寺永壽塔(ta)(ta)碑記(ji)》載:“自隆慶三年(nian)(nian)(nian)(nian)(公(gong)(gong)元(yuan)1569年(nian)(nian)(nian)(nian))以(yi)來(lai),屢施營(ying)膳之費,工程浩大,未易速竣。萬(wan)歷(li)八年(nian)(nian)(nian)(nian)(公(gong)(gong)元(yuan)1580年(nian)(nian)(nian)(nian))三月上(shang)(shang)(shang)旬告(gao)完(wan),僧復(fu)起(qi)塔(ta)(ta)名為(wei)“永壽”。康(kang)熙四十(shi)八年(nian)(nian)(nian)(nian)(公(gong)(gong)元(yuan)1709年(nian)(nian)(nian)(nian))又因地(di)震(zhen)使“永壽塔(ta)(ta)”復(fu)崩其(qi)半,因此(ci),現(xian)存塔(ta)(ta)是明代重(zhong)建的。