One of the best-preserved city walls in China can be found in the ancient ‘stone city’ of Chóngwǔ (崇武). The granite walls date back to 1387, stretch over 2.5km and average 7m in height. Scattered around the walls are 1304 battlements and four gates into the city.
The town wall was built by the Ming government as a frontline defence against marauding Japanese pirates, and it has survived the past 600 years remarkably well. You can also walk along the top of the wall at some points.
If your interest here is solely architectural, enter the old town through a narrow gate roughly 200m before the ticketed entrance. From there you can weave your way past intact 14th-century houses and up towards the wall.