Artist Vik Muniz and artist/researcher Marcelo Coelho have created the smallest sand castle in the world.

After four years of trial-and-error experimentation, artist Vik Muniz and artist/researcher Marcelo Coelho successfully created drawings as tiny as they are tremendous: magnificent castles etched onto microscopic grains of sand—a complete and innovative reversal of building a sand castle.

At less than half a millimeter in length, crisp drawings appear on flecks of earth that seem inconsequential to the naked eye. Muniz, an artist known for works that alter perspectives based on context, used to create massive, 500-meter-long drawings that could only be seen from helicopter. At ground level, these sketches looked just like dug-out paths in dirt. About five years ago, however, Muniz began thinking in the opposite direction: what if he could make drawings both miniature and monumental?

Watch the process: