Known as the Jewel of the South, Mondeor is set amongst hills outside the urban Johannesburg area but is only a 15-minute drive from the city centre.

The suburb is situated on part of an old Witwatersrand farm called Ormonde.

[3] The hills lying on the northern side of Mondeor are of sandstone, and those on the south are igneous.

The initial school building was one converted log cabin at the site of the current tennis club.

Parts of the 2010 novel Happiness is a Four-Letter Word (2010) are set in Mondeor.