With coastal wetlands, forests and canals in easy reach, Newport in South Wales is surprisingly green. It may sometimes struggle to compete with nearby Cardiff and Bristol in terms of tourist reputation, but has its own treasures: museums and markets, bridges and bars, the grounds of stately Tredegar House and Victorian parks like Belle Vue. A short bus ride north brings you to Roman Caerleon, home to the second Augustan legion for two centuries. And, heading eastwards out the city, you can s...