ROCHESTER, Minn. - The city of Rochester is annexing the land for its new regional sports complex. An action that is the first step towards development. Annexation is the process of changing the city boundaries to include a parcel of land that is not currently within it. The 160 acre lot sits within Rochester Township, which is different from the city. The main reasoning for this process is to make sure the location will have access to city services like water, sewer, and electricity.