Close up of a single dark-toned window in an aluminium facade. A vertical sun screen made of wind turbine blade is extended vertically on our side. There’s a vase with long-stemmed colourful flowers on the windowsill inside. Same long overall description as in other Alt Texts follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

A section of facade with windows, each with an open vertical sun screen made of wind turbine blade. Same long overall description as in other Alt Texts follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

A section of facade with several windows visible, each with an open vertical sun screen made of wind turbine blade. Same long overall description as in other Alt Texts follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

Close up of section of the Træ building with sun shade recognisably made of old wind turbine blade, open against a cloudless blue sky. Same long overall description as in other Alt Text follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

Close up of a single dark-toned window in an aluminium facade. A vertical sun screen made of wind turbine blade is extended vertically on our side. There’s a vase with long-stemmed colourful flowers on the windowsill inside. Same long overall description as in other Alt Texts follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

A section of facade with windows, each with an open vertical sun screen made of wind turbine blade. Same long overall description as in other Alt Texts follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

A section of facade with several windows visible, each with an open vertical sun screen made of wind turbine blade. Same long overall description as in other Alt Texts follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

Close up of section of the Træ building with sun shade recognisably made of old wind turbine blade, open against a cloudless blue sky. Same long overall description as in other Alt Text follows: the new Træ (Danish for Wood, and also Tree) office block at Sydhavnen (South Harbour), Aarhus, Denmark. It is Denmark’s tallest wooden building at 20 storeys and 78 metres high. Concrete and glass are also used. Most of the material is reused or recycled. It is quite narrow and cylindrical in three sections connected with enclosed bridges at upper floors and an outer red ramp footbridge. The cladding is very striking, sort of tiled or patchworked, lighter and darker areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different light. The many rectangular windows deeply reflect the surroundings and sky. Each rectangular window has an external sun screen that can be extended vertically. Each shade is made from a recycled wind turbine blade. Other recycled elements: bricks, aluminium facade sheets, light fittings. Lendager Architects designed Træ to be sustainable and to capture C02.

Chancellor Green Library cupola at Princeton University features an ornate 8-point star made of glass.

Chancellor Green Library cupola at Princeton University features an ornate 8-point star made of glass.

Looking sharply up at Træ, a new office block in the southern end of Aarhus Harbour. A crane towering over us to the left underlines the fact that it’s still under construction. It will be 20 storeys and 78 metres high, making it Denmark's tallest wooden building. Concrete and glass are also used and lots of the material is reused or recycled. It is quite narrow and cylindrical. The cladding is very striking, sort of tiled or patchworked, brown and black areas dotted with reflective silver patches that snake down the façade almost like lightning, shining out across the city in different lights. Some of the tiles are made of old wind turbine blades. Lendager Architects designed it to be sustainable and to capture C02.