New U2 recording studio poster (update: design has changed), a photo by infomatique on Flickr.

This is an old photograph of a poster showing what the U2 tower was originally supposed to look like but not long afterwards the design was rejected in favor of a taller building.

Since the original design competition, the parameters of the development changed. The original design concept was for a 60 metre tower on a smaller footprint, but following a planning amendment for the Grand Canal Dock Planning Scheme area, the tower was increased to 120 metres in height, with an adjoining multi-storey building moving from what was considered a local landmark to a city landmark.

Here is a photograph of the site as it is today: