Kigali Gisaka. By playing these neighbours against each other, the early kingdom flourished in the area, expanding westwards towards Lake Kivu and taking the Kigali area in the process. In the late 16th or early 17th centuries, the kingdom of Rwanda was invaded by the Banyoro and the kings forced to flee westward, leaving Kigali and eastern Rwanda in the hands of Bugesera and Gisaka. The formation in the 17th century of a new Rwandan dynasty by mwami Ruganzu Ndori, followed by eastward invasions and the conquest of Bugesera, marked the beginning of the Rwandan kingdom's dominance in the area. The
Kigali being built in the 1920s by the Belgian colonial government as a home for civil servants and Swahili traders. This latter group were mostly members of the Islamic faith, which led to Nyamirambo being known as the "Muslim Quarter". Nyamirambo's Green Mosque ("Masjid al-Fatah") is the oldest mosque in Kigali, dating back to the 1930s. Travel publisher Rough Guides has described Nyamirambo as "Kigali's coolest neighbourhood", citing its multi-cultural status and an active nightlife, which is not found in much of the rest of the city. North of Nyamirambo, and west of the CBD is Nyabugogo. Situated at the lowest