Police station at Kazungula border town, Zambia.
Fun fact. Kazungula is at the only near quadripoint in the world, with borders of Namibia, Botswana, Zambia, and Zimbabwe coming together at the confluence of the Cuando/Chobe and Zambezi rivers. You can cross the Zambezi from Zambia and be on the border fence of Botswana and Zimbabwe with Namibia within view. The possible quadripoint has caused serious diplomatic disputes in the past as no official agreements of boundaries existed for some time due to ever-shifting river channels. Currently there is a ferry/pontoon over the short distance, but can only handle a few trucks at a time, resulting in long delays for drivers at times on the key route of commerce. A bridge is being constructed to improve the commute and was required to be curved to fit the narrow strip of riverfront Botswana occupies and not violate Namibia or Zimbabwe land on either side.