Solomon David Umerdekar built the Magain Shalome Synagogue in 1893, during British colonial rule. The name means "Shield of Peace" in Hebrew. The synagogue served Karachi's Bene Israel Jewish community, a population with roots in the Indian subcontinent stretching back centuries. Photographs from the synagogue's active years show an interior with an ornate Torah ark, a raised podium for readings, and a courtyard with a stone fountain. The rabbi was photographed with his son, both men standing in the doorway of a building that would not survive the century.

The synagogue's congregational registers, covering the years 1961 to 1976, trace the community's decline in precise detail. In 1963, a circumcision was recorded. Several weddings took place in 1963 and 1964. By 1973, only 15 names appeared in the ledger, and nine of those were listed as "left Karachi." In 2004, an American Jewish woman who had taken a Torah scroll case to the United States donated the registers to the Ben-Zvi Institute in Jerusalem. The numbers in those pages tell a story of departure that the demolition merely made physical: by the time the walls came down, the community they sheltered had largely gone.

On July 17, 1988, the synagogue was demolished. In its place rose Madiha Square, a shopping plaza in the Ranchore Line neighborhood of southern Karachi. In 1989, the original ark and podium were reportedly stored by a non-Jewish resident of Karachi, an act of preservation by someone outside the faith. The Torah scroll case made its way to the United States. These scattered fragments are what remain of the last synagogue in Karachi, pieces of a religious life distributed across continents, held by people who recognized their value even when the state did not.

Karachi was once home to a small but established Jewish community. Synagogues, businesses, and social organizations served the population. The Magain Shalome was the last physical trace of that presence. Its demolition did not cause the community's disappearance; the emigration had been underway for decades. But it removed the final architectural anchor, the place where a community's rituals had been performed and recorded. Today, the site offers no visible indication of what once stood there. The shopping plaza serves the neighborhood's commercial needs. The history lives in registers kept in Jerusalem, in a Torah case in America, and in photographs of a fountain in a courtyard that no longer exists.