I'm a big lover of concept art illustrations. There are many great artists out there doing great pieces, and it's great to find more of these amazing people, like Russian artist Ivan Khomenko. Gotta love his style and ideas, which show us how creative and talented he is.
Here you can see a handful of his pieces. For more of it, please visit his portfolio at ArtStation. He'll definitely enjoy it. Also, I hope you like these as much as I did! Cheers. ;)