The Masjid An Nabavi comprises of two concentric structures-
The outside perimeter, which has the courtyard, umbrellas, etc. And the inside structure which is the actual mosque. The perimeter of the courtyard has iron walls with gates which are numbered and have 3 Digits
From the courtyard one enters the masjid proper through doors - these are numbered in 2 digits. Men and women can enter through any gate but to enter the masjid proper there are different doors for men and women. Once you understand this it will be easy to navigate the area.
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