ABERDEEN -- Scotland's third-largest city (pop. 187,000) is characterized by buildings of beautiful white granite. Set beside the North Sea, Aberdeen is both a university town and the capital of the Scottish oil boom. It is also one of Scotland's largest seaside resorts (though its appeal is confined to those who like their water well-chilled).

Lugano, tucked into Switzerland’s Italian-speaking Ticino region, blends Mediterranean flair with Alpine elegance. The city sits on the northern shore of Lake Lugano, its pastel-colored villas and palm-lined promenades framed by surrounding mountains such as Monte Brè and Monte San Salvatore.

Mahón, the capital of Menorca, one of the Balearic Islands in Spain, is a charming and historic city that offers a blend of Mediterranean beauty, rich culture, and vibrant history. Located on the eastern coast of the island, Mahón boasts a picturesque harbor, which is one of the largest natural harbors in the world.

Most commonly reached via travel from Cusco, Ollantaytambo is an Incan archaeological site in the Sacred Valley of southern Peru. The town dates from the late 15th century and is home to some of the oldest continuously-occupied dwellings in South America.

Tucked between Jordan's sandstone cliffs in the southwestern desert, Petra was carved directly into rose-colored rock more than 2,000 years ago. Visitors approaching through the narrow gorge known as the Siq are rewarded with their first glimpse of Al-Khazneh, the Treasury, a towering facade that seems to appear from another world.