A wharf is a structure built along the shoreline where ships can dock to load and unload cargo or passengers. It typically extends from the land into the water, providing a stable platform for vessels to tie up. Wharves are often made of wood, concrete, or steel and can be found in ports and harbors around the world. Wharves play a crucial role in maritime trade, facilitating the movement of goods between land and sea. They are often equipped with cranes and other equipment to assist in the loading and unloading process. Many cities, especially those near large bodies of water, have wharves that support local economies and tourism, such as those found in San Francisco or Sydney.