Geology and Landscape

• British Geological Survey
• Natural England: Yorkshire and the Humber
• Natural England: England's Geology
• Fossils of the Yorkshire Coast
• The Geological Society
• Geology of Britain (by Ian West, Southampton University)
• Huddersfield Geology Group
• Hull Geological Society
• Leeds Geological Association
• Middle Lias of Staithes, Yorkshire (by Ian West, Southampton University)
• Mike Horne's East Yorkshire Geology Pages
• North East Yorkshire Geology Trust (formerly Ryedale and Scarborough RIGS)
• UKRIGS - Regionally Important Geological and Geomorphological Sites
• Yorkshire's Dinosaur Coast
• Yorkshire Geological Society

Buildings and Building Materials

• Brickmaking in 19th century York (article by Sandra Garside-Neville)
• Brickwork: The Historic Development (article by Gerard Lynch)
• British Brick Society
• The Building Limes Forum
• Building Stones of the UK (article by Francis G Dimes)
• East Yorkshire Historic Churches Trust
• English Heritage County Building Stone Atlases
  
• English Stone Forum
• Historic Farm Buildings Group
• Images of England
• Looking at Buildings
• Malton Buildings Group
• PastScape
• The Search for Stone: Identifying, sourcing and matching Britain's building stones (article by Graham Lott)
• Stephen Pickering Traditional Building Services
  
• Stone in Archaeology: Towards a digital resource
• Stone Roofing Association
• Vernacular Architecture Group
• York Consortium for Conservation and Craftsmanship
• York Handmade Brick Company
• Yorkshire Churches
• Yorkshire Vernacular Buildings Study Group

Ryedale

• Maps of Ryedale (provided by Ryedale on the Net)
• Duncombe Park
• Helmsley Archaeological and Historical Society
• Howardian Hills Area of Outstanding Natural Beauty
• Hovingham Hall
• The Green Man in and about Ryedale
• North Yorkshire County Council's walking leaflets (including walks around Pickering, Kirkbymoorside & Kirkdale, and Terrington)
• Nunnington Hall
• Pre-Norman Stone Crosses in Sinnington and other Ryedale churches
• Ryedale Folk Museum
• Spout House, Bilsdale
• This is Ryedale

Other Regions 

• Building London
• Jurassic Coast of Dorset and East Devon

Miscellaneous

• England in Particular
• Old Maps
• Ordnance Survey's Get-A-Map service