Location: Wentzville, Mo.

Developer: THF Realty

Cost: $70 million

Size: 396,000 sq. ft. expansion to 372,000 sq. ft. center

Completion: Late 2007

Buzz: The expansion to the five-year-old project is located in the fastest-growing region in Missouri. Since 2000, St. Charles County has grown by 16.2 percent, Warren County by 17.3 percent and Lincoln County by 22.6 percent.