Barnum Roma is a brunch cafe in Rome that serves coffee, croissants, and plated breakfasts. It offers pistachio and almond croissants, cappuccino, filter coffee, and a V60 Ethiopian bean option. Tables fill quickly right after opening, and the line can shrink within 30 minutes. Croissants on display can be ordered even when they are not on the menu, and in the morning seats fill fast, creating a wait, with the pistachio croissant sometimes selling out early.