While in Hong Kong, I found out that mainland China is only about a 40 minute train ride away, so I applied for a single-entry visa (HKD$210, USD$26.25) and went up for a day. Despite the Hong Kong
residents warnings of beggars, hookers, pickpockets and bad hygene in the restaurants, I found Shenjhen a clean, well-laid out, modern city.
This is mainly because it's relatively new, around 20-30 years old and built to be a trade and tourist gateway to Hong Kong. The picture on the right is of a very large park in the center of the city. Leaving the border crossing, I walked north-east, then west then south-east back to the border, for a total of about 7 hours of walking. My legs were very sore the next day! At one point, I had to cross a small river through a bridge construction site - the workers showed me how to climb across a rickety scaffold to get to the other side which saved about an extra 2 hours of walking!