Kroyanker was born and raised in the Rehavia neighborhood of Jerusalem. His father, Dr. Gustav Krojanker, was a German Zionist activist, journalist and art researcher. His mother, Dr. Edith Krojanker, was a lawyer in the public sector. His father died of cancer when Kroyanker was six years old. He attended a high school located next to the Hebrew University of Jerusalem and served in the Paratroopers Brigade of the Israel Defense Forces from 1958 to 1961. Kroyanker studied at the Architectural Association School of Architecture in London from 1963 to 1968. He returned to Israel to work as an architect for a firm headed by David Resnick in Jerusalem, and moved to the urban planning department of the Jerusalem Municipality under Meron Benvenisti in 1970. From 1973 to 1981 he worked in various planning departments in the municipality, including the Department of Urban Planning and the Special Projects Unit Planning Department. Specializing in building preservation and rehabilitation, Kroyanker set about documenting the historical and architectural record of Jerusalem in order to build public awareness and support for preservation efforts. Among the many campaigns that he was involved in to save historic buildings was the battle to save the Talitha Kumi school building in downtown Jerusalem. The school was ultimately torn down in 1980; Kroyanker was part of the team that designed a memorial to the bulldozed structure using pieces of the original facade. Kroyanker is credited with the successful preservation and restoration of the Ticho House. To aid the public campaigns, Kroyanker wrote a series of booklets spotlighting the "architectural and historical value of the streets and buildings" These booklets were so well-received that he began documenting the history and architecture of Jerusalem for a large-format book series, producing a book every other year at his next post, the Jerusalem Institute for Israel Studies, where he became an architectural historian and documenter in 1981. By 1994 he had completed a six-volume series titled Architecture in Jerusalem, with the first five 500-page volumes documenting architecture in Jerusalem's New City and the last volume covering buildings and streets in the Old City. The first volume only was translated into English, French, German, and Italian under the title Jerusalem Architecture. These six volumes, in turn, laid the foundation for an additional 15 large-format books. As of 2010, Kroyanker has written more than 30 books on the neighborhoods and buildings of Jerusalem, 20 of which became mass-market bestsellers. His works are richly illustrated with historic photographs, maps, sketches, and original street and neighborhood plans. His wife, Leora, actively assists him by editing and proofreading texts. As a result of his research, Kroyanker has amassed the largest private archive in the world of literary and visual documentation related to Jerusalem architecture. His files include historic photographs, drawings, documents, drawings, maps and newspaper clippings. The files are catalogued in three topic areas: neighborhoods, streets and buildings; architectural/planning ; and planning processes. He has also curated exhibitions, lectured, and led tours on Jerusalem's architectural heritage.
Views and critical response
Kroyanker is openly critical of the urban degeneration in Jerusalem caused by poverty and neglect. He is also critical of the Orthodox Jewish demographic whose lower socioeconomic level, he claims, has created a lack of aesthetics in Orthodox neighborhoods and weakened the economy by forcing the exodus of cinemas and "attractive shops" from the downtown area, replacing them with bargain stores. Kroyanker's research has been criticized for its "nostalgic tone" and his exclusion of "more recent architectural phenomena such as the effect of the security barrier on the urban space, or the abundance of empty apartments in the center of town". He has also been accused of partiality toward the interests of city hall and real-estate developers. The Alrov Corp funded his book Mamilla: Prosperity, Decay and Renewal - the Alrov Mamilla Quarter, and his book on the Hebrew University of Jerusalem campus at Givat Ram was written by request of the university.
Personal
Kroyanker married Leora Farkash-Himsley in 1969. They have two daughters. In 2012 the couple relocated to Tel Aviv.
