The term 'HIGH POINTS OF A VACATION' can be summarized as the most memorable and enjoyable parts of a VACATION. The crossword solution for this term is 'ALPS', which refers to the mountain range located in Europe, stretching from Austria and Slovenia in the east, through Italy, Switzerland, Liechtenstein and Germany to France in the west. The ALPS are known for their stunning natural beauty, offering breathtaking views, skiing opportunities, and a variety of outdoor activities.