The old city of Geneva is located on a high hill, with a large slope of roads and exhausting walks. This may be to prevent flood hazards or facilitate the protection against invasion. Geneva has indeed suffered many invasions in history, and it stopped after the neutrality of modern Switzerland. The old city is more impressive than Basel. The Latin name of Geneva first appeared online in Caesar's book The War of Gaul, indicating that the old city already existed. The simple and elegant buildings of the old city are in stark contrast to the modern buildings of the new city, which clearly reflects the history of the development of this medieval ancient city into a modern international city.