WEBMay 23, 2024 · The Dolomites (Italy) are a UNESCO World Heritage Site. The Alps ( / ælps /) [a] are one of the highest and most extensive mountain ranges in Europe, [b] [2] stretching approximately 1,200 km (750 mi) across eight Alpine countries (from west to east): Monaco, France, Switzerland, Italy, Liechtenstein, Germany, Austria and Slovenia.