6 5 – 1 9 6 6 , ▁in ▁order ▁to ▁handle ▁the ▁increase ▁number ▁of ▁tour ists . ▁ ▁The ▁water ▁main ▁installed ▁in ▁ 1 8 9 8 ▁is ▁still ▁used ▁and ▁runs ▁ ▁down ▁to ▁a ▁spring . ▁Since ▁ 1 9 2 5 , ▁when ▁a ▁cable ▁was ▁laid ▁to ▁Bla uen ▁from ▁Mar z ell ▁there ▁has ▁been ▁electric ity ▁at ▁the ▁sum mit . ▁Three ▁years ▁later ▁the ▁first ▁motor ised ▁vehicles ▁made ▁their ▁way ▁up ▁the ▁mountain ▁road . ▁ ▁At ▁the ▁sum mit ▁is ▁the ▁Berg haus ▁Hoch bla uen ▁( also ▁called ▁the ▁Bla uen haus ), ▁an ▁inn ▁with ▁over night ▁accommod ation . ▁Since ▁spring ▁ 2 0 1 3 ▁the ▁inn ▁has ▁been ▁closed . ▁In ▁ 2 0 1 5 ▁it ▁was ▁being ▁modified ▁and ▁should ▁be ▁open ▁in ▁ 2 0 1 6 . ▁ ▁Tow ers ▁ ▁A ▁steel ▁lattice ▁observation ▁tower ▁was ▁built ▁in ▁ 1 8 9 5 ▁here ▁by ▁the ▁Black ▁Forest ▁Club , ▁replacing ▁a ▁rather ▁low ▁wooden ▁tower ▁d ating ▁to ▁ 1 8 7 5 . ▁It ▁was ▁inaugur ated ▁on ▁ 3 0   August ▁ 1 8 9 5 ▁and ▁fully ▁restored ▁in ▁ 1 9 8 4 ▁with ▁the ▁fund ing ▁from ▁the ▁Bundes post . ▁The ▁originally ▁ ▁tower ▁has ▁a ▁total ▁height ▁today , ▁including ▁anten na , ▁of ▁. ▁It ▁is ▁open ▁at ▁all ▁times . ▁In ▁ 1 9 8 5 ▁not ▁more ▁than ▁