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.

Grenada's capital is set amid an old volcano and a spectacular harbor. Fort George, an 18th-century defensive structure, provides amazing views of St. George's Bay.

The Atacama Desert in Chile, the driest non-polar desert on Earth, is a place of extraordinary beauty and otherworldly landscapes. Stretching over 600 miles along the Pacific coast, the Atacama's stark, lunar-like terrain is punctuated by salt flats, active geysers, and rugged canyons. One of the most striking sights is the Valle de la Luna, or Valley of the Moon, where wind-sculpted sand dunes and jagged rock formations create a surreal environment that appears as if it's straight from another

Philippines capital located in the South China Sea. Fort Santiago and Baroque church San Agustin are among the city's attractions.

Pisa, Italy, is more than just its world-famous Leaning Tower; it's a city where history, art, and culture intersect to create a fascinating experience for visitors. The Leaning Tower, part of the Piazza dei Miracoli or Square of Miracles, is an architectural wonder that draws millions each year. Built as a bell tower for the adjacent Pisa Cathedral, its unintended tilt has become a global icon.