Construction has begun on a new mixed-use office tower by Foster + Partners that will catch the eye with an unusual triangular shape.The building will also integrate greenery in the form of multiple terraces and a public garden area.

Named Avenida Cordoba 120 due to its location on a prominent street in Buenos Aires, Argentina, the project’s triangular form – like New York City’s famous Flatiron Building, not like a pyramid – will rise to a height of 35 stories.

It will be dominated by office space, but its lower floors will host a public garden and a cafe, and there will be a total of seven triple-height garden terraces situated at key points as the tower rises.

The idea is that these will be used as informal meeting spaces, and make for a pleasant place to work.