Those taking cruise holidays this year can learn more about their destinations by downloading DK Eyewitness'' new iPhone travel guides.

Destinations covered in the new city guidebook series include New York, Los Angeles, Cancun and Dubai.

Travellers will have the opportunity to browse the top attractions, restaurants and museums.

The interactive guides also feature a handy currency converter.

Software developer Roy Forsdick commented: "Mobile phones are, for many people, the number one essential travel item and we''re confident the DK Top 10 apps will help iPhone and iPod touch travellers enjoy their hard-earned vacations to the absolute max."

A recent poll carried out by Sky revealed that despite the credit crunch, people are still keen to jet abroad on holiday this summer.

Of those surveyed, 40 per cent said they have already arranged their next break, while a further 33 per cent plan to book in the near future.

P&O Cruises are available from only £199 per person