 The retro parks were built with all the luxuries of the newer parks, such as luxury boxes and more restrooms and concession areas, along with new additions, such as indoor concourses that are open to the field, allowing fans to always have a view of the game.However (except for a few exceptions harkening back to the wooden ballpark era), the aesthetics shifted back to jewel box conventions, which included the use of green seats, bricks, stone, and green-painted exposed steel.A major divergence from jewel boxes was the layout of the grandstand.