An arch is a curved structure that spans an opening in a wall, building, or bridge. Arches are used to support weight and distribute it evenly, and they can also be used to create decorative effects. There are many different types of arches, each with its own unique shape and function.
Arches have been used for centuries, and they can be found in a wide variety of architectural styles. Some of the most famous arches in the world include the Roman Colosseum, the Arc de Triomphe in Paris, and the Golden Gate Bridge in San Francisco. Arches are an important part of architectural history, and they continue to be used in modern construction projects today.