Montenegro is a Mediterranean country in Southeastern Europe. It has a coast on the Adriatic Sea to the southwest.If we had to describe the European country of Montenegro with only two words, those words are undoubtedly: "mountain” and “sea”. Montenegro may be small in terms of area, but it boasts stunning mountainous landscapes, amazing coastlines, historic monuments and truly beautiful walled towns.. It has a coast on the Adriatic Sea to the south-west and is bordered by Croatia to the west, Bosnia and Herzegovina to the northwest, Serbia to the northeast, and Albania to the south-east. Its capital and largest city is Podgorica, while Cetinje is designated as the Prijestonica, meaning the former Royal Capital City.