Wild about Weekends marks the start of Saturday and Sunday opening at this fabulously central nature reserve, tucked just behind Granary Square and 10 minutes' walk from King's Cross station. The event is a family-friendly confection of guided walks, pond-dipping, bug hunts, wildlife workshops, and arts and crafts activities. There will also be volunteering opportunities if you're interested in acquiring skills in horticulture and urban nature conservation.