Squiffy
I can't believe I only discovered this site in 2018. I discovered the World Heritage List back in 2004 and it formed a major focus of my free time for a good decade or so. I never knew that there was such an active community of fellow like-minded nerds out here.
My visits have pretty much fallen off a cliff since 2015 as I have discovered there is a limit to what is responsible or feasible with a young family. Since my honeymoon I've only managed to visit three or four new sites (the 'maybe four' being Pont d'Arc where I visited the replica cave but didn't sneak into the actual inscribed area). So my reviews will be limited to newly-visited sites or ones I have previously visited but are lacking in reviews on the site.
And as my family grows up, hopefully I'll be able to drag them along as I recommence my quest ("Hey kids! Who wants to go and see some German Modernist housing estates?")
My most impressive site: Petra. Not very imaginative I know, but I just love ancient sites
My proposal for a new site: I definitely believe there is scope for a transnational serial nomination of Brutalist buildings.