Category:WikiProject Historic sites articles

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• Talk:O2 Academy Leeds
• Talk:Oakeley Arms Hotel
• Talk:Oakfield Manor
• Talk:Oakham Market Cross
• Talk:Oaklands, Pambula
• Talk:Oakleigh, Potts Point
• Talk:Oakmere Hall
• Talk:Oakmere hill fort
• Talk:Ōarako Old Kiln ruins
• Talk:Oasis at Death Valley
• Talk:Oaxaca City
• Talk:Oaxaca en la historia y en el mito
• Talk:Obama Domain Battery Sites
• Talk:Obando Church
• Talk:Ōbaniwatorizuka Tumulus
• Talk:Obata Kitayama Haniwa Production Site
• Talk:Obélisque d'Arles
• Talk:Obere Burg
• Talk:Oberer Kuhberg concentration camp
• Talk:Oberon railway station
• Category talk:Objects listed in Lithuanian Registry of Cultural Property
• Category talk:Objects of cultural heritage in Poland
• Category talk:Objects of cultural heritage in Russia by federal subject
• Category talk:Objects of cultural heritage of Russia of federal significance
• Category talk:Objects of cultural heritage of Russia of regional significance
• Talk:Observer Hotel
• Talk:Obukumayama Kōgoishi
• Talk:Occidental Life Building
• Talk:Ocean Center Building
• Talk:Oceania House
• Talk:Oceanic Hotel
• Talk:Ochiltree Castle, West Lothian
• Talk:Ōchiwatoge temple ruins
• Talk:Ockleston House
• Talk:Ocomtún
• Talk:Octagon Chapel, Bath
• Talk:Octagon Chapel, Liverpool
• Talk:Octagon Chapel, Norwich
• Talk:Oda Castle
• Talk:Oda Chausutsuka Kofun
• Talk:Ōdachi Caves
• Talk:Ōdai Yamamoto I Site
• Talk:Ōdaka Castle
• Talk:Odani Castle
• Talk:Odara Kofun
• Talk:Ōdara Yosemiya
• Talk:Odda's Chapel
• Talk:Oddfellows Arms Inn
• Talk:Oddfellows Home Hotel
• Talk:Oddfellows' Hall, Chester
• Talk:Odeon Theatre, Christchurch
• Talk:Odeon Theatre, Hobart
• Talk:Odzaberd
• Talk:Odžaklija
• Talk:Offerman Building
• Category talk:Office buildings by heritage register
• Talk:Ōfune Site
• Talk:Ogasawara clan castle sites
• Talk:Ogatamiyasako East Stone Buddhas
• Talk:Ogatamiyasako West Stone Buddhas
• Talk:Oglebay Mansion Museum
• Talk:Ogōri Kanga ruins
• Talk:Oguni Castle (Tsuruoka)
• Talk:Ogura Castle
• Talk:Ogurayama Castle
• Talk:Ōguruwa Shell Midden
• Talk:Ōgushi Shell Mound
• Talk:Ogyū Castle
• Talk:Ōhara temple ruins
• Talk:Ōhara Yūgaku
• Talk:Ohel Rachel Synagogue
• Talk:Ohev Sholom Temple
• Talk:Ohinetahi
• Category talk:Ohio and Erie Canalway National Heritage Area
• Talk:Ohio Homestead
• Talk:Ōhira Ichirizuka
• Talk:Ohitayama Tatara Iron Works
• Talk:Ōhora Shell Mound
• Talk:Oibora-Asakura Sue Ware Kiln Site
• Talk:Oiso Shrine
• Talk:Ōita Motomachi Stone Buddhas
• Talk:Ōiwayama Kofun Cluster
• Talk:Ojai Valley Inn
• Talk:Ōjiyama Kofun
• Talk:Oka Castle
• Talk:Okadaira Shell Mound
• Talk:Okadayama Kofun
• Talk:Okameishi Kofun
• Talk:Okamoto Castle (Chiba)
• Talk:Okayama Domain Han School
• Talk:Okayama Domain Ikeda clan cemetery
• Talk:Okeechobee Battlefield
• Talk:Okeechobee County Courthouse
• Talk:Okeechobee High School (1925)
• Talk:Okinohara Site
• Talk:Okishio Castle
• Talk:Okō Castle
• Talk:Okozu Salt Works
• Talk:Okunoyama Kofun
• Talk:Okuyama shōjōkan
• Talk:Öküz Mehmed Pasha Caravanserai
• Talk:Okyōzuka Site
• Talk:Olana State Historic Site
• Talk:Old Adaminaby and Lake Eucumbene
• Talk:Old Albuquerque High School
• Talk:Old All Saints Church, Great Steeping
• Talk:Old All Saints Church, Nuneham Courtenay
• Talk:Old All Saints Church, Skelton-in-Cleveland
• Talk:Old Ambulance Station, The Rocks
• Talk:Old Banten
• Talk:Old Bar Airfield
• Talk:Old Bathurst Hospital
• Talk:Old Bazaar, Skopje
• Talk:Old Bethany Church
• Talk:Old Bishop's Palace, Chester
• Talk:Old Bridge, Huntingdon
• Talk:Old Brooklyn Fire Headquarters
• Talk:Old Bunbury railway station
• Talk:Old Bushells Factory
• Talk:Old Cahokia Courthouse
• Talk:Old Casino railway station
• Talk:Old Castle Lachlan
• Talk:Old Cathedral of Coimbra
• Talk:Old Cathedral of Cuenca
• Talk:Old Cathedral of Lleida
• Talk:Old Cathedral of Plasencia
• Talk:Old Cathedral of Salamanca
• Talk:Old Choral Hall
• Talk:Old Christ Church, Waterloo
• Talk:Old church of Santa Galla (Rome)
• Talk:Old Church of St Afran, St Ieuan and St Sannan, Llantrisant
• Talk:Old Church of St Domenica, Dingli
• Talk:Old Church of St James, Upton
• Talk:Old Church of St John
• Talk:Old Church of St Mary the Virgin, Preston Candover
• Talk:Old Church of St Nicholas, Uphill
• Talk:Old Church of St Nidan, Llanidan
• Category talk:Old cities in Palestine and Israel
• Talk:Old City Hall (Guelph)
• Talk:Old City of Freiburg
• Talk:Old City of Gaza
• Talk:Old Co-op Shop
• Talk:Old Cobram-Barooga Bridge
• Talk:Old Colombo Dutch Hospital
• Talk:Old Como railway bridge
• Talk:Old Conduit House
• Talk:Old Constitution House
• Talk:Old Core of Zemun
• Talk:Old Coroner's Court, The Rocks
• Talk:Old Court House, Perth
• Talk:Old Court Theatre, Scone
• Talk:Old Crown Inn
• Talk:Old Crypt, Chester
• Talk:Old Custom House Inn, Chester
• Talk:Old Dee Bridge
• Talk:Old Deer
• Talk:Old Deer Park
• Talk:Old Dutch Hospital, Galle
• Talk:Old Erie Canal State Historic Park
• Talk:Old Errowanbang Woolshed
• Talk:Old Exe Bridge
• Talk:Old Farm, Strawberry Hill
• Talk:Old Fire Station, Chiswick
• Talk:Old Fort Harrod State Park
• Talk:Old Franklinton Cemetery
• Talk:Old Fremantle Police Station and Court House Complex
• Talk:Old Gala House
• Talk:Old Goulburn Brewery
• Talk:Old Government Building, Christchurch
• Talk:Old Government Cottages Group, Bathurst
• Talk:Old Government House, Brisbane
• Talk:Old Great North Road (Devine's Hill to Mount Manning Section)
• Talk:Old Hall Hotel, Sandbach
• Talk:Old Holy Trinity Church, Wentworth
• Talk:Old Hospital de la Santa Creu, Barcelona
• Talk:Bell Farm House, Harrietsham
• Talk:Old House, Pirot
• Talk:Old Iloilo City Hall
• Talk:Old Kerosene Store
• Talk:Old Kia Kima
• Talk:Old King's Head Hotel, Chester
• Talk:Old King's School, Parramatta
• Talk:The Old Kings Arms
• Talk:Old Man's Valley Cemetery
• Talk:The Old Manor, Croscombe
• Talk:Old Market (Omaha, Nebraska)
• Talk:Old Market House (Galena, Illinois)
• Talk:Old Market Square, Potsdam
• Talk:Old Marulan Town
• Talk:The Old Maskinsnedkeri
• Talk:Old Masonic Hall (Booneville, Mississippi)
• Talk:Old Mining Museum Building
• Talk:Old Mittagong Post Office
• Talk:Old Mortuary Chapel, Carew
• Talk:Old Mulkey Meetinghouse State Historic Site
• Talk:Old Newcastle Club Building
• Talk:Old Newcastle East Public School
• Talk:Old North Building
• Talk:Old Oaks Farm
• Talk:Old Orchard Street Theatre