Many courses replaced open fields and/or farmland. Architects often had the choice of property and choose sites that were conducive for golf. They mostly avoided tough sites because clearing trees, removing rock, building bridges,...was very expensive, difficult, and time consuming. Some architects even passed when offered a tough site like Tillinghast did at The Cascades. He is quoted as saying there was no chance to build a great golf course there. Flynn begged to differ and took the commission.