Upper Rock Nature Reserve, Gibraltar

The top of the Rock of Gibraltar, a nature reserve home to the Barbary macaques, Europe's only wild monkeys. From the summit, on a clear day, you can see across the Strait of Gibraltar to Morocco and the Rif Mountains of Africa. The ticket includes St Michael's Cave, the Great Siege Tunnels dug through the rock in the 18th century, the Moorish Castle and other sites.

Get up by cable car from the bottom of Main Street, on a minibus tour, or on foot. Don't feed or touch the monkeys and hold on to your bags; they're quick to snatch food. The Skywalk glass platform and the Windsor Suspension Bridge are thrilling extras.

Gibraltar is a British Overseas Territory: walk across the border from La Línea in Spain and across the airport runway. Bring your passport. Main Street has British shops, pubs and fish and chips, and the pound is the currency (euros are widely accepted).