[5] The guns on Signal Hill were used to notify the public when a ship was in trouble and there was a possibility of casualties on the coast near Cape Town.

[3] There is a road to the summit and that vantage point provides views over the Cape Town city centre and Atlantic Seaboard and surroundings, including at dawn or sunset.

Signal Hill is one of the only places in the world where critically endangered Peninsula Shale Renosterveld vegetation can be found.

[citation needed] Peninsula Shale Renosterveld used to be the dominant ecosystem of the Cape Town City Bowl, but was completely endemic, occurring nowhere else in the world.

Urban growth has now covered most of this ecosystem and — along with a tiny patch on Devil's Peak — Signal Hill has the only surviving sample of this vegetation in the world.