Weekend Market / Panjiayuanmarkt
East of the center, near the 3rd ring you will find this famous flea market. According to travel guides you can buy here antique well. However, according to experts, there is very little real antiques to buy. If there is antiques for sale then the local antique dealers get it because there go to the market very early in the morning.
Remember that Chinese are masters in forging. Walk a few times over the market. If you see the same things several times you can be sure that it had recently come from a factory.
Here you can well find great curiosities. They ask about 10 times the minimum price. The permanent indoor stalls are open throughout the week.