skyscraper1The construction of  the world’s first ‘invisible tower’ in Seoul, South Korea is about to begin.

The 450m high glass-encased skyscraper, called the Tower Infinity will use an LED facade and cameras on the back to project the surroundings behind the building onto its front. When turned on, the system will make the outlines of the tower indiscernible.

The projections can also broadcast special events or advertisements onto the building. Even when the projections are turned off, the skyscraper has some built-in transparency. It will be constructed using a great deal of clear glass and has an open floor plan so visitors can look down multiple levels.

The optical illusion will make the building seem to disappear, according to its designers GDS Architects.

The entertainment-themed building will include wedding halls, a roller coaster, water park and a range of restaurants. It will also feature the world’s third-highest observation deck, at 392m.

What’s puzzling is that it’s being built in the Yongsan International Business District, near the busy Incheon International Airport.

The architects first began designing the tower in 2004, but have just been given the green light to begin its construction. The project is backed by the Korea Land and Housing Corporation