First came the castle. The nearly 300,000 fans descending on the Marco Simone club for the Ryder Cup this week will be able to see the 11th-century castle with the same name from various points of the course — it’s wedged between the sixth and eighth holes and has a big Italian flag waving from its tower — but they won’t be able to visit it. Biagiotti Cigna’s parents bought the castle in 1978 — the year she was born — and then decided to build the surrounding golf course.