GIBRALTAR

About 2 miles by a half Gib. is covered in paths. Get a taxi up to St Michael's caves and walk north to the end and back down. Big duty free shopping street, but the airport shop is quite a bit cheaper. Getting a bit classy and expensive these days, but still nice. Adventurous? How about a day out to Tangiers. Or Marbella, Sevilla, Jerez or Cadiz in Spain.
Mikes tips:- for a relaxing afternoon stroll the main street and then have a pint outside the Mad Monk watching the guards change at the Governors Residence. If you go to Spain avoid all mention of Gibraltar and be very polite to the Spanish border guards on return. When near the apes keep anything you want to keep well covered.