Orman Garden, located in Giza, Egypt, near the University of Cairo, is one of the most famous botanical gardens in Egypt.
The garden covers about 28 acres. It was first designed in 1875. Today, the garden contains an herbarium building, a rock garden, a rose garden, cactus gardens, and probably the most notable feature, the lotus pond.
The garden is open from dawn to dusk. There is a cost for admission, but I was unable to find that information for this post.