Amsterdam, the 17th century capital of Holland, is often called the "Venice of the North" due to its numerous, boat-navigable canals. Truly rich in history, the oldest part of this populous, multicultural city is Sloten, which dates all the way back to the 9th century.

Khiva, located in western Uzbekistan’s Khorezm region, is one of Central Asia’s most evocative Silk Road cities.

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.

San Gimignano, a stunning medieval hilltop town in Tuscany, Italy, is often called the "Medieval Manhattan" due to its remarkable skyline of ancient towers. Encircled by 13th-century walls, the town is a UNESCO World Heritage site that offers a mesmerizing journey back in time. As you stroll along the cobbled streets of the historic center, you'll be enchanted by the preserved Romanesque and Gothic architecture, from charming piazzas to grand churches.

Niagara Falls, New York, is home to one of the most powerful natural spectacles in North America. More than 3,000 tons of water pour over the edge every second, creating a thunderous roar and a rising mist that can be felt from blocks away. Visitors can stand just feet from the American Falls at Prospect Point or take the iconic Maid of the Mist boat tour, which has operated since 1846 and now features all-electric vessels.