Photo taken on April 24, 2010 shows the the China Pavilion in the World Expo Park in Shanghai, east China. [Xinhua/Wang Song]

Shanghai, Zhejiang and Jiangsu are joining forces to promote Yangtze River Delta tours that coincide with Expo. The 10 official tours all depart from Shanghai, run from two to five days and aim at giving tourists a glimpse of everything the area has to offer.

Here is a perfect four-day trip highlighting what to see and do to enjoy the very best that each stop has to offer.

Four days on the road

Day 1: Shanghai

Shanghai Museum at People's Square is a great choice for art and culture fans, with a collection of 120,000 works. It is renowned for its Chinese bronze sculptures, ceramics, painting and calligraphy. The museum's modern architecture with a round top and a square base symbolizes an ancient Chinese philosophy of a square earth under the sky.

Scattered around Shanghai are traditional shikumen houses offering a glimpse into the lives of Shanghai's past. The best place to view them is Shimen Erlu and Shaanxi Nanlu. Blending Western architecture with traditional Yangtze Chinese style and social behavior, shikumen reveal the secrets of urban development in Shanghai.

If you are a romantic, then the one-kilometer-long Wukang Lu in Xuhui District is perfect for a stroll. With lots of celebrities' houses in 1930s style hidden behind the green leaves of Sycamore trees, Wukang Lu is a quiet escape from the hustle and bustle of the city.

The Bund is definitely deserving of high expectations and a recent facelift has accentuated its importance. The Bund is a splendid reflection of Western architecture from the early 1900s and is set against the Huangpu River and facing the modern Lujiazui area, creating a dialogue between Tuesday and today, history and modernity.

Late afternoon is a perfect time to take in the 400-year-old Yu Yuan (Yu Garden). Enjoy the tranquility before joining a riverboat sightseeing cruise as your last sight-seeing stop before embarking on the glamorous nightlife of the city.