original question: what site listing category is the category or criteria of a natural or cultural site listing that belongs to the category of [Engineering] ? 
answer: transportation, architecture
answer type: Site Listing Category.
auxiliary information: Engineering is the application of scientific, economic, social, and practical knowledge in order to invent, design, build, maintain, research, and improve structures, machines, devices, systems, materials, and processes. The discipline of engineering is extremely broad, and encompasses a range of more specialized fields of engineering, each with a more specific emphasis on particular areas of applied science, technology and types of application. The term Engineering is derived from the Latin ingenium, meaning "cleverness" and ingeniare, meaning "to contrive, devise".
Name the site listing category with the category or criteria of a natural or cultural site listing that belongs to the category of [Engineering] .