Win a week's self-catering holiday for two in the southern Peloponnese - by answering the question below (Clue: the answer can be found in this week's Escape).

The vast Peloponnese peninsula has few tourists, glorious scenery and timeless villages. Chrani is one of these, in a fertile area known as the Garden of Peloponnese. It's a quiet seaside hamlet with views across the Messinian Gulf to the mountainous Mani opposite, a good beach, good swimming and enticing tavernas.

Sunvil Holidays, which is celebrating 30 years of specialist holidays in Greece and the Greek Islands, is offering the prizewinner and partner a choice of departure dates - all Sundays - 25 June, 2 July or 9 July - to a one-bedroom apartment in the Villa Sophia. The apartment has stunning views from its large balcony and is just yards from a small pebble beach. Flights are from Gatwick, departing at 7.30am, arriving at 1pm, direct to Kalamata airport, which is 45 minutes from Chrani. The return flight leaves at 2pm and arrives at Gatwick at 3.35pm. Flights, transfers and accommodation are included.

The question: Which ancient city was home to 40,000 people in its heyday and a flourishing centre for Byzantine arts? Answers on a postcard by 12 June to Sunvil Holidays/Observer Competition, Sunvil House, Upper Square, Old Isleworth, Middlesex TW7 7BJ. Include your name, address and telephone number. For a copy of Sunvil's Specialist Greece brochure call 020 8758 4747.