"I have always loved looking at perspectives from above; it allows us to see so many things that would otherwise be unnoticed," Janulis tells the BBC.

More photos by Karolis on Instagram.
Gediminas Castle, a landmark of Vilnius, looks quite different from above
Snow-covered rooftops of box-like garages.

The frozen Neris River

Lit by the son, that doesn't rise high above the horizon in winter, trees throw long shadows that can be properly appreciated only from above
River dotted with flowers of ice
Snow covers the damaged roof of a large building in Vilnius

Network of roads in black and white
Snow-covered rooftops of Vilnius