There can be few places in the world that equal the Rock in terms of sheer physical presence. Gibraltar is situated in a unique strategic location on the southern tip of the Iberian Peninsula, overlooking the Strait of Gibraltar and linked to mainland Europe by a narrow isthmus. Despite an imposing appearance Gibraltar is small, measuring just over six square kilometres in total. Its precipitous rock and cliffs stretch skywards some 426 metres, consisting mainly of mainly Jurassic limestone some 200 million years old. This is the only place in Europe where monkeys roam freely in a semi-wild state, reflecting the Rock’s rich natural history, which flourishes in a Mediterranean climate.