The most successful convertible stadium, in St. Louis, drew 32 events last year, only eight of which did not involve sports.

It was the first convertible stadium for baseball and football.

Movable seating is a feature of some facilities like stadiums, often known as convertible stadiums, or moduable stadiums.

Jack Ham How do retractable roofs in convertible stadiums work?

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These new convertible stadiums allow athletic fields to be covered during inclement weather, but can be opened to allow the sun to shine in on fair weather days.

Let's look at a few of these convertible stadiums:

Given their popularity, it's likely we will see many more of these convertible stadiums built in the next decade until they are replaced by the next stadium trend.

With Safeco's cost cresting above the half-billion mark (the Kingdome cost $67 million, far less even adjusting for inflation), it is not clear whether municipalities will continue to finance convertible stadiums.