The Etzel, an armed Jewish underground organization in pre-State Israel (during the British Mandate period), bombed the building in protest. Western Union, a way to transfer money abroad. Service inside the Post Office.
WIZO (in Hebrew it's pronounced vitso) is the Women's International Zionist Organization, a movement of Zionist women founded in England in 1920. WIZO volunteers do fine work to improve Israeli society.
I can show you where the ladies run a second-hand shop of housewares and clothes on Hillel Street. ;-)
Watch out when walking in Warren's Shaft water system!
Warren's Shaft in the City of David. It played an important part in bringing water to ancient Jerusalem. Watercourse? -- Some think that this system is the tsinor, translated variously as watercourse or pipe, mentioned in Samuel II 5:7-8, through which David conquered the city from the Jebusites.