Add an urban garden gateway with an industrial twist by using a corten steel arch. Corten steel is a weathering steel that develops a unique rust-like appearance over time, making it a popular choice for industrial-inspired designs. The corten steel arch can be installed at the entrance of your garden, creating a dramatic and eye-catching focal point. As the arch weathers, it will develop a rich patina, enhancing its industrial charm. You can complement the corten steel arch with climbing plants such as wisteria or clematis, which will intertwine with the structure and soften its rugged look. This combination of industrial materials and natural elements will create a captivating urban garden gateway.