While Cape Town is one of Africa's more relaxed cities, it's by no means a place to throw caution to the wind. If you do get blown in the way of the Cape Flats make sure you have a trustworthy guide leading you. There have been reports of hoodlums stoning cars on the N2 near the airport; never stop here if possible. Most busy areas (including all tourist sites) are basically safe during day and night business hours - just keep abreast of local advice. Environmental hazards include strong rips at the beach, sudden temperature changes and ticks in the mountains.