A 1,476-foot tower is WORLD 1st Iinvisible buliding equipped with its very own cloaking device

The world’s first invisible tower is being built in South Korea—and once completed it will become the third highest observation deck in the world. The invisibility illusion will be achieved thanks to a reflective façade equipped with LED technology that will work as a reflective skin—a sort of invisibility cloak that will blend the tower with the skyline.

read more.....http://io9.com/a-1-476-foot-tower-equipped-with-its-very-own-cloaking-1300809867

all the explaination how  all this tower was made invisible by using LED technology...is made understood in link i've provided