Which architectural innovation, first popularized in 1956, revolutionized suburban retail by creating an enclosed, climate-controlled environment with multiple stores arranged along indoor walkways?

The intersection of architecture and retail has transformed how we experience shopping. From department stores to modern malls, architectural innovations have defined retail spaces for centuries. This trivia question explores a groundbreaking retail architectural concept that changed the shopping landscape and influenced countless designs worldwide.

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The enclosed shopping mall (first major example: Southdale Center in Edina, Minnesota)
The strip mall (strip shopping plaza with shared parking)
The department store atrium (pioneered by Bon Marché in Paris)
The arcade (glass-roofed shopping passage like Burlington Arcade in London)