Find out more Click on the links below for further information about various aspects of York's historic environment and its management. Commission a full HER search Full HER search for commercial use/planning purposes or to read information policy York City Walls Information about York City Walls including opening times, events and attractions. Areas of Archaeological Importance York is one of 5 cities that has been designated as an 'Area of Archaeological Importance' (AAI). Planning & archaeology within an historic city Types of investigation and planning requirements Conservation Areas Information on conservation areas, appraisals and related planning matters Listed Buildings Information on listed buildings and listed building consent Scheduled Monuments Advice on Scheduled Monuments and gaining Scheduled Monument Consent Advice on the use of metal detectors Buckle. Image courtesy of York Museums Trust :: http://yorkmuseumstrust.org.uk/ :: CC BY-SA 4.0. Deposit Model Data Information on City of York deposit model data stored within the HER