"Old Structures" refer to buildings and constructions that have historical significance or architectural value. These can include ancient castles, temples, and bridges that showcase the design and engineering techniques of their time. Many old structures are preserved as cultural heritage sites, allowing people to learn about history and appreciate craftsmanship. These structures often reflect the materials and styles used in their era, such as stone, wood, or brick. They can vary in age, from a few decades to several centuries old. Preservation efforts aim to maintain their integrity and ensure they remain part of our shared history for future generations.