Londonderry, often called Derry, is a city steeped in history and charm, uniquely surrounded by remarkably well-preserved 17th-century walls. In fact, it holds the title of being the only completely walled city in all of Ireland. Strolling along these ancient ramparts offers visitors not only a glimpse into the past but also breathtaking panoramic views of the winding River Foyle and the lively streets below.

Barranquilla sits near the mouth of the Magdalena River on Columbia's Caribbean side. It is a major seaport and a center of commerce, but everyone breaks loose for four days in February for one of the liveliest carnivals outside of Rio.

Behold beautiful Lucerne! This German-speaking area of central Switzerland on Lake Lucerne is a truly spectacular locale. Surrounded by mountains and notable for its famous Chapel Bridge, this idyllic and musical Swiss locale is wonderful any time of year.

Saint-Malo, a captivating walled city on the coast of Brittany, France, invites visitors to step back in time while embracing the beauty of the rugged coastline. Known for its rich maritime history, this former pirate stronghold has retained its medieval charm, with narrow cobblestone streets, towering granite walls, and fortifications that echo tales of seafaring adventures.

Dutch Harbor, Alaska, located on Unalaska Island in the Aleutian chain, is a remote yet captivating destination that offers a unique blend of natural beauty, rich history, and vibrant culture.