Cairo

The Cairo Metro has three operational lines.

An excerpt from the article 16 facts about Cairo
It was the first rapid transit system in the Arab world. Construction plans date back to the 1930s, but it was not until 1982 that the construction could be started. The first line was launched in 1987, and the last in 2012. The metro is constantly being expanded. Further expansion plans include another three lines scheduled to be launched by 2032. Such investment is very expensive, so it is possible that the completion date will be postponed for several years.