Matches in DBpedia 2014 for { ?s <http://dbpedia.org/property/openToPublic> ?o. }
- Mittelwerk openToPublic "Museum in the southern part of Tunnel A".
- Miyao_Castle openToPublic "24".
- MoD_Kineton openToPublic "No".
- Monivea_Castle openToPublic "Yes".
- Monkcastle,_North_Ayrshire openToPublic "No".
- Monkredding_House,_North_Ayrshire openToPublic "No".
- Monomoy_Island_Gunnery_Range openToPublic "Yes".
- Mont_Orgueil openToPublic "Yes".
- Montacute_Castle openToPublic "Yes".
- Montagu_Bastion openToPublic "No".
- Monte_Sant_'_Angelo_Castle openToPublic "yes".
- Montfode_Castle openToPublic "No".
- Montgrí_Castle openToPublic "yes".
- Montreal_(Crusader_castle) openToPublic "Yes".
- Moorish_Castle openToPublic "Yes".
- Moorish_Wall openToPublic "Yes".
- Morgraig_Castle openToPublic "Yes".
- Mosede_Fort openToPublic "Yes".
- Muchalls_Castle openToPublic "No".
- Mugdock_Castle openToPublic "Yes".
- Muiderslot openToPublic "Yes".
- Murud-Janjira openToPublic "Yes".
- Mülenen_Castle openToPublic "yes".
- Nagashino_Castle openToPublic "yes".
- Nakhal_Fort openToPublic "Yes".
- Napier_of_Magdala_Battery openToPublic "Yes".
- Nassau_Castle openToPublic "yes".
- Naukšēni_Manor openToPublic "Yes".
- Naval_Training_Center_Orlando openToPublic "Yes".
- Naval_Weapons_Industrial_Reserve_Plant,_Bedford openToPublic "No".
- Naval_Weapons_Industrial_Reserve_Plant,_Bethpage openToPublic "No".
- Naval_Weapons_Industrial_Reserve_Plant,_Calverton openToPublic "Partially".
- Naval_Weapons_Industrial_Reserve_Plant,_Dallas openToPublic "No".
- Neidpath_Castle openToPublic "No".
- Nemerlaer_Castle openToPublic "yes".
- Neu-Aspermont_Castle openToPublic "yes".
- Neu-Ems_Castle openToPublic "no".
- New_Mole_Battery openToPublic "No".
- Nidau_Castle openToPublic "yes".
- Nijō_Castle openToPublic "yes".
- Nimrod_Fortress openToPublic "April–September: 8 a.m. – 5 p.m. October–March: 8 a.m. – 4 p.m.".
- Nirengi_Castle openToPublic "24".
- Nishikawa_Castle openToPublic "yes".
- Nishio_Castle openToPublic "yes".
- Niš_Fortress openToPublic "Yes".
- No_Man's_Land_Fort openToPublic "No".
- Nodes_Point_Battery openToPublic "Yes".
- Nomans_Land_Range openToPublic "Yes".
- North_Bastion,_Gibraltar openToPublic "Yes".
- North_Truro_Air_Force_Station openToPublic "Partially".
- Norton_Manor_Camp openToPublic "No".
- Norwich_Castle openToPublic "yes".
- Nunney_Castle openToPublic "Yes".
- Näsbyholm_Castle openToPublic "Unknown".
- O'Hara's_Battery openToPublic "Yes".
- Oberer_Mannenberg_Castle openToPublic "yes".
- Observation_Post_Alpha openToPublic "Yes".
- Odawara_Castle openToPublic "yes".
- Odiham_Castle openToPublic "Yes".
- Okazaki_Castle openToPublic "yes".
- Okehampton_Castle openToPublic "Yes".
- Okno openToPublic "No".
- Okno-S openToPublic "No".
- Old_Blockhouse openToPublic "Yes".
- Old_Fortress,_Corfu openToPublic "Yes".
- Olenegorsk_Radar_Station openToPublic "no".
- Olesko_Castle openToPublic "yes".
- Operation_Tracer openToPublic "No".
- Orford_Castle openToPublic "Yes".
- Osbyholm_Castle openToPublic "Unknown".
- Oud_Poelgeest openToPublic "Yes as Hotel".
- Ouvrage_Bambesch openToPublic "Yes".
- Ouvrage_Barbonnet openToPublic "Yes".
- Ouvrage_Bois-Karre openToPublic "Yes".
- Ouvrage_Bois-du-Four openToPublic "Yes".
- Ouvrage_Bousse openToPublic "Yes".
- Ouvrage_Cap_Martin openToPublic "Yes".
- Ouvrage_Castillon openToPublic "No".
- Ouvrage_Champ_de_Tir openToPublic "No".
- Ouvrage_Col_de_Garde openToPublic "No".
- Ouvrage_Coucou openToPublic "No".
- Ouvrage_Croupe_du_Reservoir openToPublic "No".
- Ouvrage_Einseling openToPublic "Yes, surface only".
- Ouvrage_Ferme_Chappy openToPublic "No".
- Ouvrage_Fermont openToPublic "Yes".
- Ouvrage_Four-à-Chaux openToPublic "Yes".
- Ouvrage_Fressinéa openToPublic "Yes".
- Ouvrage_Galgenberg openToPublic "Yes".
- Ouvrage_Gondran openToPublic "Occasionally".
- Ouvrage_Hackenberg openToPublic "Yes".
- Ouvrage_Hochwald openToPublic "No".
- Ouvrage_Immerhof openToPublic "Yes".
- Ouvrage_Janus openToPublic "Under study".
- Ouvrage_Kobenbusch openToPublic "Surface only".
- Ouvrage_L'Agaisen openToPublic "Yes".
- Ouvrage_La_Ferté openToPublic "Yes".
- Ouvrage_La_Salmagne openToPublic "Yes".
- Ouvrage_Lembach openToPublic "No".
- Ouvrage_Les_Aittes openToPublic "By arrangement".
- Ouvrage_Michelsberg openToPublic "Yes".