The first-gen Mercedes-Benz SLK is fitted with an innovative hardtop convertible that changed how the sports car world ...

The Arizona Cardinals built a beautiful new stadium in 2006 with a retractable roof, and the roof wasn't with precipitation in mind. You may have heard that it doesn't rain much in the Phoenix area.

The massive 33,000-seat stadium will be built at the south end of the Las Vegas Strip, where the Tropicana hotel previously stood, and will feature a partially-retractable roof that gives onlookers an ...