Ink and pencil
Yuriy Pomortsev is russian a jeweller, lithographer, graphic artist. He is a member annual local exhibitions "Artists of Zelenogorsk" since 1995. His artwork were also exhibited in St. Petersburg, Pushkin, Sestroretsk, Kronshtadt, Pavlovsk, Järvenpää (Finnland).
Below, you can see impossible architecture in Escher style.
Artist's gallery http://www.artlib.ru/index.php?id=11&fp=2&uid=16136
Ink on paper
The image was found at http://www.artlib.ru/index.php?id=11&idp=0&fp=2&uid=16136&iid=203375&idg=0&user_serie=0