公(gong)園內現存(cun)長城(cheng)遺(yi)(yi)跡(ji)中,部分(fen)地段屬(shu)北齊時期修建;而大(da)部分(fen)為明初所修。長城(cheng)屬(shu)純石結構單邊(bian)內長城(cheng),自東北伸向西南,恰似一(yi)條雄偉的石龍,騰浮于起(qi)伏的山(shan)巔之上。公(gong)園每年組織大(da)型中秋賞月節(jie)、金秋栗(li)子節(jie)、九九重陽(yang)登(deng)高節(jie)等各項活動,登(deng)高遠眺,心曠神怡。東邊(bian)密(mi)云(yun)水庫全(quan)景盡收眼底,西望(wang)云(yun)蒙峽(xia)谷一(yi)覽無(wu)遺(yi)(yi)。
北(bei)(bei)(bei)(bei)京(jing)云(yun)蒙(meng)山長城遺(yi)(yi)址(zhi)公(gong)園位于北(bei)(bei)(bei)(bei)京(jing)東(dong)(dong)北(bei)(bei)(bei)(bei)90余(yu)公(gong)里,密云(yun)水(shui)庫之(zhi)(zhi)西,占地(di)7000余(yu)畝。其(qi)(qi)地(di)處云(yun)蒙(meng)山東(dong)(dong)緣(yuan),山形(xing)韶(shao)秀天成,群(qun)峰(feng)特起,常隱于云(yun)霧之(zhi)(zhi)中(zhong),素有(you)“北(bei)(bei)(bei)(bei)國黃(huang)山”之(zhi)(zhi)美譽。現存長城遺(yi)(yi)跡據傳(chuan)部(bu)分(fen)地(di)段有(you)屬北(bei)(bei)(bei)(bei)齊(qi)時期者;而大(da)部(bu)分(fen)為(wei)明初(chu)所修,屬薊鎮邊(bian)墻(qiang)東(dong)(dong)中(zhong)西三路之(zhi)(zhi)西路。其(qi)(qi)石塘嶺段北(bei)(bei)(bei)(bei)起石塘嶺,南(nan)迄開連口,長九十二(er)里,設關砦十二(er),附墻(qiang)臺三座,空心(xin)敵臺五(wu)十九座,初(chu)建于洪武(wu)、永(yong)樂年間(jian)(jian),隆慶、萬歷年間(jian)(jian)又加修補改建。
云蒙山(shan)長(chang)城(cheng)遺址公園墻(qiang)體(ti)多(duo)以(yi)山(shan)石包砌,填充夯土,外側疊(die)筑垛口;敵(di)臺(tai)下壘條石,上砌青磚;關砦城(cheng)置于(yu)水(shui)(shui)陸要沖。清代唯用關砦城(cheng)而長(chang)城(cheng)失修,墻(qiang)體(ti)上半部多(duo)有殘缺(que),平(ping)添幾分滄(cang)桑之(zhi)色;然下半部多(duo)保存完整,盤旋(xuan)起(qi)伏于(yu)山(shan)谷(gu)之(zhi)間,已與之(zhi)渾然融為一體(ti),不容(rong)不得稍(shao)加修飾,其白河之(zhi)南水(shui)(shui)谷(gu)山(shan)亦稱滴溜褂山(shan),懸崖西向(xiang),墻(qiang)體(ti)依勢作(zuo)南北蜿蜒狀,連以(yi)三(san)道邊樓(lou)(lou)、將軍樓(lou)(lou)、四方樓(lou)(lou)等三(san)座敵(di)臺(tai)及圓形烽火臺(tai),今又得稱四座樓(lou)(lou)山(shan)。
云(yun)(yun)蒙山(shan)長城遺址公(gong)園長城南跨清(qing)(qing)溪(xi)(xi)(今(jin)稱(cheng)云(yun)(yun)蒙峽(xia)),東(dong)水谷關(guan)城及古(gu)水關(guan)遺址猶存(今(jin)栗林度假山(shan)莊(zhuang)南六里許)清(qing)(qing)康熙(xi)年間,有(you)宋代名臣范(fan)仲淹第十九(jiu)世孫、兵(bing)部(bu)尚書(shu)范(fan)承勛致仕后“數策(ce)仗登其巔,審其氣象軒(xuan)豁,城郭(guo)完固(gu)”,而擇青甸溪(xi)(xi)流之北建清(qing)(qing)溪(xi)(xi)山(shan)莊(zhuang)(在今(jin)栗林度假山(shan)莊(zhuang)東(dong)六里許庫區)。今(jin)山(shan)溪(xi)(xi)城郭(guo)依(yi)稀(xi)可(ke)辨(bian),而更得(de)見密云(yun)(yun)水庫之大觀。