Matches in DBpedia 2014 for { ?s ?p <http://dbpedia.org/resource/Category:National_Historic_Sites_in_Ontario> . }
- Point_Frederick_(Kingston,_Ontario) subject Category:National_Historic_Sites_in_Ontario.
- Port_Talbot,_Ontario subject Category:National_Historic_Sites_in_Ontario.
- Queenston_Heights subject Category:National_Historic_Sites_in_Ontario.
- Rideau_Canal subject Category:National_Historic_Sites_in_Ontario.
- Royal_Military_College_of_Canada subject Category:National_Historic_Sites_in_Ontario.
- Royal_Military_College_of_Canada_Museum subject Category:National_Historic_Sites_in_Ontario.
- Royal_Military_College_of_Canada_chapels subject Category:National_Historic_Sites_in_Ontario.
- Sainte-Marie_among_the_Hurons subject Category:National_Historic_Sites_in_Ontario.
- Sault_Ste._Marie_Canal subject Category:National_Historic_Sites_in_Ontario.
- Serpent_Mounds_Park subject Category:National_Historic_Sites_in_Ontario.
- Sharon_Temple subject Category:National_Historic_Sites_in_Ontario.
- Sheguiandah subject Category:National_Historic_Sites_in_Ontario.
- Shoal_Tower subject Category:National_Historic_Sites_in_Ontario.
- Sir_Adam_Beck_Hydroelectric_Generating_Stations subject Category:National_Historic_Sites_in_Ontario.
- Southwold_Earthworks subject Category:National_Historic_Sites_in_Ontario.
- Studio_Building_(Toronto) subject Category:National_Historic_Sites_in_Ontario.
- Tay_Canal subject Category:National_Historic_Sites_in_Ontario.
- The_Carlu subject Category:National_Historic_Sites_in_Ontario.
- The_Grange_(Toronto) subject Category:National_Historic_Sites_in_Ontario.
- Thunder_Bay_Tourist_Pagoda subject Category:National_Historic_Sites_in_Ontario.
- Toronto_Power_Generating_Station subject Category:National_Historic_Sites_in_Ontario.
- Trent–Severn_Waterway subject Category:National_Historic_Sites_in_Ontario.
- Whitefish_Island subject Category:National_Historic_Sites_in_Ontario.
- Whitehern subject Category:National_Historic_Sites_in_Ontario.
- Woodside_National_Historic_Site subject Category:National_Historic_Sites_in_Ontario.