Serbia is a country on southeast Europe's Balkan peninsula with vast northern plateaus and mountains with ski resorts to the south. Serbia (56,594 km² – 7.2 million inhabitants) is landlocked and borders Hungary to the north; Romania and Bulgaria to the east; Macedonia to the south; and Croatia, Bosnia & Herzegovina and Montenegro to the west; it also claims a border with Albania through the disputed territory of Kosovo. The capital of Serbia, Belgrade, is one of the largest cities in Southeast Europe.