Sifting through the structures that time forgot brings us closer to the past and fuels our imagination. In some parts of Britain, you could be forgiven for thinking that the zombie apocalypse had already arrived…
1. Furhouse Manor, Berkshire
2. Hartford Cotton Mill, Oldham
3. Maunsell Forts, Thames Estuary
4. Ace High Dishes, RAF Stenigot
5. Millennium Mills, Docklands
6. St Athan Boys' Village, Vale of Glamorgan
7. Cwm Coke Works, Beddau
8. Gartloch Hospital, Glasgow
9. Hartwood Hospital, North Lanarkshire
10. Point of Ayr Lighthouse, Flintshire
11. Broadford Works, Aberdeen
12. Penallta Colliery, South Wales
13. Denbigh Asylum, North Wales
14. Colin’s Barn, Wiltshire
15. Cambridge Military Hospital
16. Gascoigne Wood Mine, North Yorkshire
17. Talgarth Mental Hospital, Wales
18. Shoreham Cement Works
19. Fisons Fertiliser Factory, Stanford-le-Hope
20. Abbey Mills Pumping Station, London
Want to discover more quirky places to see? Check out HomeAway's Places to See Before You Die and receive personalised travel recommendations.
Written by Kai Sedgwick, a travel writer for HomeAway.co.uk.