Lisbon's position on seven low hills beside a river once lured traders and settlers, and it's still a stunning site. Add to that its cultural diversity, laid-back feel and architectural time warp, and you have one of the most enjoyable cities in Europe - and also one of the most economical. It's the kind of place where you can sit at street cafes - sampling food or fado - and watch the world go by. But for the eager there are also plenty of cultural activities. In addition to architectural masterpieces at Belém, Lisbon has over 50 museums to visit.