You are looking for a black magnetic nano. The cache is by a busy road and bus stop but careful retrieval and replacement by touch should be possible at most times. Although the pavement is wide here, please be mindful of the traffic especially if caching with geokids or geohounds. There is (30 minute stay) on-road parking outside many of the nearby shops and the cache could also be attempted as a short walk from Chester City centre.
From GZ you will also have a good view of the Earl's Eye, where the River Dee bends around the meadows as it makes its way into Chester.
Congratulations to Reallysquare and Wilderness-Girl on the FTF.