Alberobello in southern Italy’s Puglia region captures the imagination with its distinctive trulli houses. These structures were built using a dry-stone technique passed down over centuries, without mortar or cement, and their unique form comes from layer upon layer of limestone nestled from nearby fields. Alberobello’s trulli are so remarkable that in 1996 the historic center was inscribed as a UNESCO World Heritage Site, where more than 1,600 of these buildings still stand.

Dubuque sits along the Mississippi River in northeastern Iowa, where steep limestone bluffs rise above a broad river corridor. The city is Iowa’s oldest incorporated community and developed around river commerce, lead mining, manufacturing, and trade. Its historic downtown contains preserved brick buildings, churches, shops, restaurants, and the distinctive Town Clock, while the Port of Dubuque provides a more modern riverfront district.

Skardu is a mountain town in Gilgit-Baltistan, northern Pakistan, set in a broad valley near the confluence of the Indus and Shigar rivers. It serves as an important gateway to the Karakoram and to trekking and mountaineering routes leading toward K2, Gasherbrum, and other high peaks. The town is surrounded by starkly contrasting landscapes, including dry mountain slopes, fertile valleys, turquoise lakes, and high-altitude plains.

Set along the western shore of Lake Maggiore, Stresa is one of northern Italy’s most graceful lakeside towns. Its elegant promenade, framed by grandhotels and views of the Borromean Islands, has attracted travelers since the 19th century, from European nobility to writers like Ernest Hemingway.

Southampton is a city shaped by the sea. Located on the southern coast of England, it has been a key maritime port for centuries. In 1912, the RMS Titanic set sail from its docks, and today, the SeaCity Museum tells the story through the lives of local residents connected to the voyage. The medieval city walls, which are some of the best-preserved in England, still stand, offering a walk through time with views of old merchant houses, towers, and hidden vaults once used to store wine and wool.