From cloaked alien tanks and jets in the computer game Starcraft to a transparent flying fortress in the movie Avengers, the concept of invisibility has always been considered a product of science fiction.
That is, until South Korea recently authorised the construction of Tower Infinity, a 450m-tall skyscraper which will use high-tech projectors to make it appear as if the building is not really there.
The glass tower, backed by the Korea Land & Housing Corporation (KLHC), will be built in South Korea's main gateway city of Incheon, on the outskirts of the Incheon International Airport. The working design and specific dates for construction of the tower have not been set, according to a KLHC official.
If constructed as originally designed, it will be the sixth-tallest tower in the world, behind Tokyo SkyTree, Guangzhou's CantonTower, Toronto's CN Tower, Moscow's Ostankino Tower and Shanghai's Oriental Pearl.
However, the key feature of Tower Infinity will not be its height but its unique camouflage system, which will combine the use of cameras and LED panels to make the building virtually invisible.
Multiple cameras placed at three different heights on six different sides of the building will capture real-time images of the surroundings.
The images will then be projected on LED screens on other sections of the building. The images will be altered to create panoramic visuals.
"Instead of symbolising prominence as another of the world's tallest and best towers, our solution aims to provide the world's first invisible tower," Mr Charles Wee, design principal of GDS, said in a statement.