The Dome of the Rock. It does not look in very good condition, does it?
The photos were taken by the first director of the German Protestant Institute of Archaeology (DEIAHL), Gustaf Dalman, an eclectic early-20th century polymath who fell in love with the Holy Land and set out to catalog its inhabitants, plants, animals, sounds and way of life. The DEIAHL was founded in 1900 by the German Protestant church at the behest of Kaiser Wilhelm II following his historic visit to Jerusalem two years earlier, with the stated aim of promoting “the exploration of the Holy Land and its diverse past, cultures and religions.”
The proud German was eventually banned from returning to Palestine by the British when he returned to Germany in 1914. Lots of photos at the link.