Which architectural feature, first popularized in 1970s shopping centers, revolutionized retail design by creating dramatic multi-level sightlines and is now considered essential for premium retail environments?

In the world of architectural retail design, certain innovations have fundamentally transformed how we experience shopping spaces. The strategic incorporation of natural light, open spaces, and vertical connectivity has evolved through decades of retail architecture theory and practice. This poll tests your knowledge about a pivotal retail design element that revolutionized shopping environments in the late 20th century and continues to influence modern retail architecture today.

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The central atrium with skylight
The exterior curtain wall system
The anchor store bypass corridor
The split-level entrance plaza