The Tokyo 2020 Olympic Games went ahead successfully despite a series of controversies in the run-up, including accusations of plagiarism and greenwashing. Here are five architecture and design scandals that threatened to derail the games.

Stadium linked to deforestation
Much has been made of the use of timber in the roof and cladding of Kengo Kuma's 68,000-seat Japan National Stadium, which was built to host the athletic events as well as the opening and closing ceremonies.
However, the Japanese government was criticised for the timber used as a mould for the concrete structure. An investigation by more than 40 charities found that the tropical hardwood being used was linked to deforestation and human rights violations.
A petition signed by over 140,000 people demanded that the government rethink its use of tropical hardwood at the stadium. "The Olympics is supposed to be all about 'fair play' and 'the youth of the world coming together'. In reality, the human rights of Sarawak's indigenous people and the environment are being threatened by the Olympics," said Mathias Rittgerott of charity Rainforest Rescue, who delivered the petition in Germany.
"The use of tropical timber from Sarawak on Olympic construction sites is nothing to celebrate," she added.

Sustainability efforts branded "greenwashing"
The Tokyo 2020 Olympic Games aimed to be the greenest in recent history, with a host of initiatives from recycled cardboard beds to podiums m...