With its winding streets, covered arcades and traffic, this is very like Delhi&rsquos Chandni Chowk &mdash lots of small shops selling everything from plastic drainpipes to gold, with dingy apartments upstairs. But there is little &lsquoold&rsquo left in the old town &mdash with the exception of the fabulous Yu Gardens (Garden of Leisurely Repose), built in the 16th century. It is wise to begin there. You enter through a shop-lined avenue heavy with teapots, fans and red Chinese lanterns, and arrive at last in a charming walled courtyard with a giant pool. A traditional wooden teahouse occupies the island in the centre and as you blink at it wondering if this is all there is to Shanghai&rsquos number one tourist attraction, you see a discreet board saying &lsquoYu Gardens Entry&rsquo. You enter an imposing Chinese pavilion with wooden latticework and discover an even more charming pavilion and water garden just behind. That&rsquos when you learn that in fact Yu Gardens is a labyrinth, a maze of man-made islands separated by carefully constructed waterways, covered passageways and curving dragon-headed walls. Through each gateway and around every corner you will discover a new surprise. Take your time, stop for tea in one of the pavilions and enjoy the brilliant way its architecture seamlessly unites nature, tradition and sculpture.