Foster + Partners have announced plans to construct a stunning tulip-shaped glass skyscraper which will become London's tallest building.

The planned tower will stand 305m (1,000 ft) high and will function solely as a tourist attraction.

Internal slides and transparent pods running outside the building’s ‘stem’ will give visitors a picturesque ride to the top.

Spinning gondola pods fixed to each of the three sides of the bulbous tulip-shaped facade would operate as viewing decks. Inside the 12-storey glass bubble will be a bar and a restaurant offering 360-degree views of the metropolis.

Tulip tower London

Above: View from the observation deck. Photo credit: Dbox for Foster + Partners

Pending planning permission, construction on the building will start in 2020 with the building set to open in 2025.

The building was designed by Foster + Partners, who also designed the award-winning 30 St. Mary Axe (better known as the ‘Gherkin’) next door. The tulip tower has been designed as a ‘sister’ building to its neighbour.

Plans include a high-tech education space which would be free to visit for 20,000 school children each year.

London’s tallest skyscraper billed as a new landmark

The firm’s Executive Chair Norman Foster said the Tulip “offers significant benefits to Londoners and visitors as a cultural and social landmark with unmatched educational resources for future generations.”

Jacob J. Safra, whose Bury Street Properties company is funding the ambitious project, said: “The Tulip’s elegance and soft strength complements the iconic Gherkin.”

Tulip Tower London

Above: Inside the observation levels. Photo credit: Dbox for Foster + Partners

At the base, a two-storey entrance pavilion with a rooftop garden would stand next to a “pocket park”. Alongside green walls this would increase the green surface area of the site by 8.5 times, Foster + Partners said.

The structure will draw on photovoltaic cells to generate on-site energy, while zero combustion energy will heat and cool the building.

Header image: Dbox for Foster + Partners