Prada

Designed by Rem Koolhaas of Dutch architecture firm Office for Metropolitan Architecture, the 24,000-square-foot space contrasts a simple, box-like exterior with white and black marble, aluminum, glass and retro green accents. Sure, the main draw are multi-thousand-dollar handbags, eyewear, shoes and apparel for men and women, but Prada's "Los Angeles Epicenter," as the brand calls it, is also a spectacle of innovative design. The grand staircase, which forms a hill dotted with mannequin displays, also makes for an impressive entrance. Shop Prada's high quality collections or step in just to marvel at the unique design.