Artist Ran Hwang creates these giant wall installations by using a gazillion buttons and hammering pins. Ran Hwang says:

My immense wall installations are extremely time consuming and repetitive manual work. This is a form of meditative practice that helps me to find inner peace. Typical materials related to the fashion industry are used to create conceptual icons such as Buddha or traditional vase. Works are divided into two groups.

For the first type of work, pins are used to hold the buttons onto the surface to form silhouetted image, or to disintegrate such image. No adhesive is used so that buttons are free to stay and move, which implies the genetic human tendency tobe irresolute. I use buttons, because they are common and ordinary, like the existence of human beings. The second group of work consists of connecting a massive number of pins with yards of thread to occupy a negative space of the presented image. Here, threads serve as metaphor for connection and communication between unlinked human relations. Fulfilled negative space and absence of the image formed by positive space suggests deeper understanding of the image. I believe mortal essence in the heart of self recognition.

(via Dude Craft)