Tennessee's Andrew Jackson estate spans 1,200 acres; its new plan puts much of a 70,000-square-foot visitor center underground so the building does not interrupt views across the historic landscape

• The Andrew Jackson Foundation announced the project, calling it a "generational transformation," to replace the current visitor facilities built in 1989.
• By placing large parts of the new complex underground, designers hope to keep views across the estate clear and help visitors feel like they've stepped back into t