Climate Pledge Arena
The roof of Seattle's major arena dates from the 1962 World's Fair, but everything beneath it is the product of a $1.15 billion rebuild completed in 2021. The only way to see the inside is to attend an event—it's home to Seattle's WNBA and NHL teams and hosts concert throughout the year. If you do, you're likely to be impressed by its features including a spectacular entrance with 50-foot-tall windows, 39 plant species spread over a 1,700-square-foot "living wall," and more LED lights than in any other arena in the world.