Patenburg is located in Boulogne Billancourt, western Paris, France, and is a historic military defense fortification. Built in the 19th century, it was part of the Paris city defense system and was used to defend against possible invasions. The name comes from French engineer Jean Louis Pat, who designed this fortress in the mid-19th century. The architectural style reflects the characteristics of military architecture at that time, with thick walls and sturdy structures to resist enemy attacks. Over time, the military role of Fort Pat gradually weakened, but it was repurposed and now serves as a cultural and educational center.

The windmill located in the town of Haliko in southwestern Finland, in the Krevanmeki region, is a landmark historical building in the area. Built in the 19th century, it is one of the few well preserved windmills in Finland, reflecting the precious heritage of Finnish agricultural history and architectural traditions. Usually used for grinding, they are an indispensable part of agricultural society, and their existence not only showcases the technology of the time, but also reflects the lifestyle of the local people. Adopting the traditional Nordic windmill design, it has an elegant appearance and practical features, with its towering tower and huge sails becoming a unique scenic line.

A historic building component located in Latvia. Built in the 19th century. This structure typically refers to a decorative fireplace or chimney, whose design and construction often reflect the architectural traditions and cultural characteristics of a specific region. As a representative of traditional Latvian architecture, it not only holds significant importance in architecture, but also reflects the local history and culture. As a historical building, it witnesses an important stage of local industrial development. It represents the past era and architectural style, attracting those interested in history and culture. Both local residents and tourists can experience unique charm and historical memories.

The Church of Saint Raphael is located in Pratamon, Greece and is an impressive Eastern Orthodox church. This church is located near the town of Platamon, backed by the Attica Mountains and overlooking the Aegean Sea. The Church of San Rafael was built in the 19th century and is a building of historical and religious significance. The architectural style of the church blends Eastern Orthodox tradition and local cultural characteristics, with a simple and elegant appearance. The interior of the church is decorated with exquisite murals and decorative arts, showcasing the exquisite craftsmanship of Eastern Orthodox art. The Church of San Rafael attracts many believers and tourists to visit and experience the solemn atmosphere and beautiful scenery of religion.

Located on the New Channel of the Newton Cross coastline in London, UK, this small brick building was built in the 19th century and includes a hand-operated water gate for controlling water flow. It is a hydraulic engineering facility that plays a crucial role in the waterway system. Mainly used to regulate water levels and ensure smooth transitions for ships between rivers or canals at different water levels. Adopting classic engineering design and combining modern technology to enhance its functionality and efficiency. As part of water management, the Ivy House Sluice not only promotes the development of the shipping industry, but may also have a positive impact on the local ecological environment, agricultural irrigation, and flood control measures.