This year designers created a huge variety of conceptual architecture from a straw bale school to a bamboo colony on Mars. Semi Han continues our review of 2019 with 10 of the most intriguing concepts.

East 34th Street, New York, USA, by MAD Architects
Chinese studio MAD Architects envisioned a 232-metre tall skyscraper to sit next to the Empire State building at East 34th Street. Unlike its neighbours, it is designed to curve, bend and taper so that it softens the skyline.
Inside, shops and public amenities would encircle a multi-storey atrium and large green wall, which could offer visitors a "new type of 'urban nature' in a vertically dense city".
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Straw Bale School, Malawi, by Nudes
Straw Bale School is a concept for a secondary school in Malawi. The school would be built from wooden A-frames topped with straw bales arranged linearly to create forms that vary in height. The school's classrooms would be placed within the A-frames with entrances incorporated into the ends of each module.
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Low cost-shipping container housing, Lima, Peru, by TRS Studio
Peruvian-based TRS Studio envisioned homes created from two repurposed shipping containers topped with a polycarbonate roof for this affordable housing concept.
Each 60-square-metre house would contain a living area, kitchen, bathroom, a master bedroom and a small garden.
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Infinity London, London...