Incorporate Curves The secret to cultivating intrigue in the garden? "Always have a curve," Brian says. "You want to keep them guessing -- What's up ahead? What will I discover? You don't need a lot of space to achieve that." Stroll to the other end of this vine-festooned arbor and you'll come upon a 110-foot-long, 15-foot-high wall of water that pours over Roman pillars to create a misty veil for viewing the garden beyond.