They may look like pin-sharp photographs – but these amazing pictures are actually drawings created with the humble ballpoint pen.

The stunning pictures, measuring up to 10ft high, were drawn by a rising star of the art world, Juan Francisco Casas.

Casas, 31, can use up to four 14p ballpoint pens for a canvas and his works are already a sell-out at exhibitions.

Formerly a traditional painter, Juan began the drawings three years ago based on photographs of nights out with his friends.