Calling all old-house oglers, church crawlers, museum mavens, heritage hunters, battle reenactors, genealogy gurus, temple trekkers, fortress fans, palace perusers, shipwreck spotters, cemetery wanderers, revelers in ruins, lovers of lighthouses, & adventurers in antiquity...
This corner of the internet is dedicated to you.
Go Historic has entries on over 500,000 historic places — including most of the National Register (USA), Listed Buildings (UK), Scheduled Monuments (UK), & World Heritage Sites — along with over 40,000 photos to illustrate them.
And it's all provided completely free, with no pop-ups, cookies, privacy issues, or annoying ads. Happy exploring!