除(chu)了(le)臺北(bei)(bei)本宮外,在西元1956年,黃欉(cong)分別在北(bei)(bei)投(平埔族嗄嘮別舊址)、三(san)(san)峽兩地整(zheng)建主祀關公的(de)寺廟,即為行(xing)天宮分宮、并稱「行(xing)天三(san)(san)宮」;行(xing)天宮發展至今,
除了是當地重(zhong)(zhong)要(yao)的(de)民(min)間(jian)信仰外,也(ye)是全臺各地信徒的(de)景仰所在,行天宮已成(cheng)為臺灣重(zhong)(zhong)要(yao)的(de)民(min)間(jian)信仰中心(xin)。廟宇古樸明凈中透露肅穆莊(zhuang)嚴(yan),首創常規宗教素心(xin)作(zuo)風;沒設(she)功(gong)德箱,傳說靈驗市民(min)奔相(xiang)走(zou)告,因此香火鼎(ding)盛(sheng)游(you)客絡(luo)繹不絕。
行(xing)(xing)天(tian)(tian)(tian)(tian)宮的(de)(de)歷史發展可追溯至大(da)(da)約在(zai)(zai)西元(yuan)1949年(nian),位(wei)于臺北(bei)(bei)(bei)縣(xian)樹鎮的(de)(de)煤礦商人黃(huang)欉(cong)(行(xing)(xing)天(tian)(tian)(tian)(tian)宮敬(jing)稱(cheng)「玄空師父(fu)」),在(zai)(zai)臺北(bei)(bei)(bei)市九臺街(林森北(bei)(bei)(bei)路(lu)民(min)權東(dong)路(lu)口(kou)附(fu)近)建(jian)(jian)立了關(guan)帝廟行(xing)(xing)天(tian)(tian)(tian)(tian)宮(原為(wei)慶善堂),至1960年(nian)代(dai)初開(kai)始有(you)了將原本的(de)(de)關(guan)帝廟行(xing)(xing)天(tian)(tian)(tian)(tian)宮擴(kuo)建(jian)(jian)的(de)(de)計(ji)畫,但在(zai)(zai)政府推(tui)動(dong)九年(nian)國民(min)義務教育(yu)時,此(ci)地(di)改劃為(wei)國民(min)中學預定(ding)用地(di),歷經交涉后(hou),臺北(bei)(bei)(bei)市政府以瑠(liu)公圳末梢支流、沼澤的(de)(de)公有(you)地(di)交換,黃(huang)欉(cong)便請擁有(you)豐富建(jian)(jian)廟經驗(yan)的(de)(de)廖石(shi)成設計(ji)、施工,終于在(zai)(zai)1968年(nian)行(xing)(xing)天(tian)(tian)(tian)(tian)宮順利落成;1949年(nian)黃(huang)欉(cong)在(zai)(zai)三峽(xia)建(jian)(jian)立關(guan)帝廟行(xing)(xing)修(xiu)(xiu)宮,但由于香客日益龐(pang)大(da)(da),因此(ci)不得不將廟舍牽至今日北(bei)(bei)(bei)投(tou)行(xing)(xing)天(tian)(tian)(tian)(tian)宮所在(zai)(zai)地(di),三殿(dian)式(shi)的(de)(de)大(da)(da)廟格(ge)局讓(rang)北(bei)(bei)(bei)投(tou)行(xing)(xing)天(tian)(tian)(tian)(tian)宮更為(wei)氣派;1962年(nian)黃(huang)欉(cong)自建(jian)(jian)白(bai)雞行(xing)(xing)修(xiu)(xiu)宮,至1965年(nian)落成,形成臺北(bei)(bei)(bei)行(xing)(xing)天(tian)(tian)(tian)(tian)宮、北(bei)(bei)(bei)投(tou)行(xing)(xing)天(tian)(tian)(tian)(tian)宮和(he)白(bai)雞行(xing)(xing)修(xiu)(xiu)宮行(xing)(xing)天(tian)(tian)(tian)(tian)三宮的(de)(de)系(xi)統。
行(xing)天(tian)宮(gong)供祀五恩主,正殿主祀關(guan)公(gong)(關(guan)圣帝君),佛教稱(cheng)迦藍(lan)菩薩、道教稱(cheng)協天(tian)大帝,另外還有呂洞賓(孚佑帝君、呂恩主)、張單(dan)(灶神、張恩主)、王(wang)善(王(wang)恩主)和(he)岳飛(岳恩主);行(xing)天(tian)宮(gong)大殿左右側殿旁祀關(guan)云(yun)長義子關(guan)平和(he)麾下大將周倉,以及(ji)道教三清(qing)、佛祖、孔子和(he)三教其他神明;臺北行(xing)天(tian)宮(gong)的民俗習(xi)慣和(he)其他廟(miao)宇有些許不(bu)同,例(li)如(ru)不(bu)燒(shao)金紙、不(bu)拜牲禮以及(ji)以添油箱代替拜斗科儀(yi)。
行天(tian)宮商場即行天(tian)宮地(di)下(xia)道,從民(min)(min)權(quan)松江路口四(si)個角落入口進入,亦可稱(cheng)(cheng)為(wei)(wei)算命街(jie),與龍(long)山寺(si)地(di)下(xia)街(jie)合稱(cheng)(cheng)為(wei)(wei)「臺北(bei)市兩大命理區」,占(zhan)地(di)約為(wei)(wei)88平方公尺,共有22家(jia)攤位以香燭、水(shui)果、算命等攤位為(wei)(wei)主,于西元1985年(nian)營業,每天(tian)約從上午8點至晚上9點,除了是臺灣當地(di)民(min)(min)眾(zhong)看相、問事、占(zhan)卜(bu)的好去處,也是國(guo)外(wai)旅(lv)客特別是日(ri)籍旅(lv)客喜愛造訪(fang)的旅(lv)游勝地(di),讓(rang)來到(dao)行天(tian)宮旅(lv)游的民(min)(min)眾(zhong)能順道至行天(tian)宮商場(行天(tian)宮地(di)下(xia)街(jie))體驗臺灣獨(du)特的民(min)(min)俗風情(qing)。