The term WHERE WATERLOO IS can be answered with two different solutions: BELGIUM (7 letters) and IOWA (4 letters). BELGIUM is a small country located in Western Europe, bordered by France, Germany, Luxembourg, and the Netherlands. The capital of BELGIUM is Brussels, and the city of Waterloo is located in the Walloon region of the country. Waterloo is most famously known for the Battle of Waterloo, which took place in 1815 and was a decisive victory for the British and Prussian forces over the French. IOWA is a state located in the Midwestern United States, bordered by Minnesota, Wisconsin, Illinois, Missouri, Nebraska, and South Dakota. The capital of Iowa is Des Moines, and the city of Waterloo is located in Black Hawk County.