Everyone knows Aspen as a top-notch winter resort town. But outdoor enthusiasts will enjoy it in the summer, too, when the mountains become a perfect setting for hiking, biking and horseback tours. Some may be surprised to find it’s a top romance destination—but after all that outdoor exercise, who wouldn’t want to repair to a luxurious hotel room or a cozy, firelit bar?

Crans-Montana actually comprises two ski resorts, Crans-sur-Sierre and Montana- Vermala, although for all intents and purposes, they function as one. Popular with affluent Italians, the skiing is good (best for beginners and intermediates), but the shopping, eating and drinking are even better. The resort claims to be on the sunniest plateau in the Alps, and indeed the snow is often lacking, but the views over the Rhône are superb. Every September, the resort hosts the European Masters golf tournament.

When most people think of Zermatt, they think of one thing: The Matterhorn. This ultimate Swiss icon looms over Zermatt, first drawing visitors here in the 1860s. The village of Zermatt itself is lovely and car-free, with old-fashioned brown chalets and winding alleys. (Don’t worry, you don’t have to walk everywhere—there are electric vehicles and horse-drawn cabs.) Skiing in the region often lasts through early summer, but when the weather’s warmer, it’s a great time to hike.

Although originally known as a summer destination, when the first snowflakes land in St-Moritz, so do the international scenesters, bundled up in the latest "must-have" accessories. In winter, take a ride on the Glacier Express from Zermatt to arrive in style. Cable cars ascend to three nearby mountain tops. Hundreds of miles of ski trails and a frozen lake comprise the area's most popular sports venues. Follow the Romans' example and try one of the city's mineral springs, such as St-Moritz Bader.

Coveted by empires and republics throughout its history, Innsbruck was the seat of the imperial court of Maximilian I by the end of the 15th century. Trams make getting around the city quick, efficient and cheap. Explore the Tyrolean capital's history at Archduke Ferdinand II's 10th-century Schloss Ambras, the Tyrolean Folk Art Museum, the grand 15th-century Imperial Palace and Maximilian I's famous Golden Roof. One of Europe's most idyllic cities, Innsbruck is nestled in the heart of the Alps.

High in the Dolomites, Cortina d’Ampezzo boasts 140 ski runs and over 50 miles of cross-country pistes. Beloved for decades by society types for its après-ski scene, Cortina lies at the center of the Valle d’Ampezzo and has been featured in a number of films, including “Cliffhanger” and “For Your Eyes Only.”