▁dam aged ▁in ▁the ▁fall ▁of ▁Berlin ▁in ▁ 1 9 4 5 ▁at ▁the ▁end ▁of ▁the ▁Second ▁World ▁War , ▁and ▁after ▁a ▁short ▁period ▁in ▁Soviet ▁hands ▁it ▁became ▁an ▁officers ' ▁mess ▁for ▁the ▁occup ying ▁U . S . ▁Army , ▁though ▁because ▁of ▁its ▁historical ▁prest ige ▁it ▁was ▁also ▁used ▁for ▁cultural ▁and ▁diplom atic ▁events . ▁ ▁In ▁ 1 9 9 4 ▁it ▁was ▁returned ▁to ▁German ▁control ▁and ▁revert ed ▁to ▁its ▁original ▁use ▁in ▁the ▁hands ▁of ▁the ▁Max ▁Plan ck ▁Gesellschaft , ▁the ▁post - war ▁successor ▁organisation ▁to ▁the ▁K W G . ▁ ▁It ▁now ▁offers ▁excellent ▁facilities ▁for ▁con ferences , ▁with ▁meeting ▁rooms ▁and ▁restaur ants , ▁and ▁also ▁accommod ation ▁for ▁visitors ▁to ▁the ▁various ▁Max ▁Plan ck ▁Instit utes ▁in ▁Berlin ; ▁the ▁architecture ▁and ▁furn iture ▁remain ▁in ▁the ▁original ▁style . ▁ ▁To ▁provide ▁additional ▁accommod ation , ▁the ▁House ▁oper ates ▁a ▁guest ▁house ▁on ▁the ▁opposite ▁side ▁of ▁the ▁I hn est ras se ▁from ▁the ▁main ▁building . ▁ ▁External ▁links ▁ ▁H arn ack ▁House ▁official ▁website ; ▁most ▁of ▁the ▁information ▁in ▁this ▁article ▁can ▁be ▁found ▁in ▁more ▁detail ▁on ▁this ▁site . ▁Google ▁map ▁showing ▁the ▁location ▁of ▁the ▁house ▁V eter ans ' ▁site ▁about ▁US ▁forces ' ▁use ▁of ▁the ▁house ▁ ▁Category : Max ▁Plan ck ▁Society ▁Category : Cl osed ▁install ations ▁of ▁the ▁United ▁States ▁Army ▁Category : Build ings ▁and