Every tourist visiting Cape Town wants to climb Table Mountain, but very few climb Devil's Peak which is right next to it. There is no cableway going up, so the only people on top will be real hikers. There are a couple of routes going up, varying from easy walks that involve no climbing (I once walked up with a dislocated elbow in a sling) and take about 5-8 hours from the parking lots at the bottom to some reasonably challenging rock climbing. The vegetation is a forest to about 500m and fynbos (Cape Town shrubs) to the top(1000m) from there. The animals you might see on the slopes include Himalayan Tahrs, Fallow Deer, Rock Dassies and Sunbirds.