Glasdrum Wood National Nature Reserve is a wonderland of ferns, mosses, and fungi. Where shards of sunlight pierce the oak and ash canopy, otters can be found darting into the shadows and roe deer graze in harmony with skipper butterflies and rarely sighted moths. It is also a best-in-Britain place to spot butterflies and moths. The region is particularly busy from Thursday to Monday and during local holidays, so if travelling in the high summer season, reserve at least four weeks in advance.