Final answer:
Tokyo's Olympic stadium plans were overhauled due to cost escalations and public opposition, part of a larger conversation on Olympic sustainable legacy.
Step-by-step explanation:
The plans for Tokyo's Olympic stadium faced significant alterations and public scrutiny. Originally destined to be a grand monument for the 2020 Tokyo Olympics, the stadium project was fraught with challenges, including escalating costs and public disapproval. Certain designs were discarded due to financial and practical considerations, compelling Japanese authorities to adopt a more cost-effective and culturally harmonious design. Other Olympic host cities have encountered related issues; Beijing's Bird's Nest was a design masterstroke for the 2008 Olympics, while Rio faced criticism for its preparation for the 2016 Games, with reports of unsanitary conditions and social inequality. Japan's experience is not isolated but part of a broader discussion regarding the sustainability and legacy of Olympic infrastructures.