Any trip to Florence must include a visit to the Duomo, as a thumping great example of majestic architecture and for its stunning views. But a strong note of caution if you find heights uncomfortable. To get to the top you have to walk, or in my case trot blindly, around two levels of very narrow wooden gallery, set to the inside of the dome. This offers an intimate view of the impressive ceiling mural but also places you uncomfortably close to God.