manjerix is a bit of a puzzle. They joined Flickr in 2007, last uploaded in 2010. There are only around 400 or so photos on their Flickr page, yet 36,000 views. Four followers, 2 following. That's a strange mix. No information on their About page, not even country of origin (I think we can assume Portugal, though). I'm about to send them an email, so we'll see what comes of that. Lovely work, very striking.
Header photo: Convento da Ordem de Cristo