Norman Foster has revealed these designs for a new $1.2billion (£730million) tower in Philadelphia.
The founder of London-headquartered Foster + Partners has created plans for a 59-storey building for Comcast Corporation and Liberty Property Trust.
The Comcast Innovation and Technology Center will be 340m tall, making it the tallest building in the US outside New York and Chicago.
Comcast Corporation will use the building for its growing workforce of technologists, engineers and software architects.
Local broadcast television stations NBC 10/WCAU and Telemundo 62/WWSI will also use the building, which will contain a Four Seasons hotel.
The glass and stainless steel tower will include a block-long lobby with a glass- enclosed indoor plaza.
Foster described the building as a ‘very special project’, adding: ‘It is an opportunity to create a unique and sustainable model for mixed-use, high density development, which uniquely combines spaces for high tech research and development with restaurants, gardens, fitness facilities and a significant public reception space – a window on Philadelphia,’ he said.
‘At ground level this ‘urban room’ embraces the city; it opens the building to the public and anchors it as a vital new neighborhood. It also links directly into the below ground public transport system.
‘Above this, the highly flexible loft-like spaces and studios are designed for a dynamic way of working – an engine for the city’s evolution as the kind of leading technology hub presently associated with Silicon Valley.’