The 10 most controversial architecture projects of 2021

Next in our review of 2021, we round up 10 of the most controversial schemes that made headlines this year, including the Sky Pool and The Tulip.Photo is by Simon Kennedy
Sky Pool, UK, by HAL
A transparent swimming pool suspended between two buildings at the Embassy Gardens development in London gained huge attention this summer as aerial footage of residents enjoying the facility on a hot day went viral.
But the HAL-designed pool came in for heavy criticism after the Guardian's Olly Wainwright