French architect, Jean Nouvel worked with Spanish studio Ribas & Ribas to create a unique leaf-shaped window pattern for the Marriot Renaissance Barcelona Fira Hotel.
The building comprises a pair of 110-metre towers that are joined at the top by a rooftop restaurant, terrace and swimming pool.
The façade is punctured by windows shaped like palm fronds that frame each of the 357 guestrooms, creating a lace-like pattern.
Inside, the leafy windows are complimented by and enclosed atrium, which is encased in glazing and spans the height of the hotel.
Zig zag staircases wind up the interior, lined with hanging plants, trees and shrubs from five different continents that provide greenery on every floor.
The garden theme is continued on the roof, where guests can lounge under the shade of cabanas and plants.