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.

Skopelos is the largest island of the Northern Sporades, situated between Skiathos and Alonissos in the Aegean Sea. It is notably green, with pine forests and olive groves covering much of the island and reaching close to the coast. Skopelos Town, the island’s main settlement, rises amphitheatrically above the harbor, with white houses, tiled roofs, stone lanes, and numerous churches.

Kẻ Bàng National Park lies in central Vietnam, near the border with Laos, and is known for its vast network of limestone mountains and underground rivers. The park forms part of one of the oldest karst landscapes in Asia, shaped over millions of years into a maze of caves, cliffs, and dense forest. Among its most famous features is Sơn Đoòng Cave, recognized as the largest cave on Earth, with sections so vast that clouds can form inside and a jungle grows beneath its collapsed roof.

Pinnacle Mountain State Park is a protected recreation area west of Little Rock, Arkansas, centered on the distinctive summit of Pinnacle Mountain. The park covers more than 2,300 acres along the Arkansas River and combines forested slopes, rocky ridges, wetlands, and open river landscapes. Pinnacle Mountain rises above the surrounding Ouachita Mountain foothills and is one of the most recognizable natural landmarks near the state capital.

Warnemunde (or Warnemünde) is a port city in Germany and a frequent stop on many Northern European cruises. Across the Baltic Sea from Denmark's capital, Copenhagen, this charming seaside city has a number of delightful attractions, including the Warnemünde Lighthouse, a variety of local shops along the marina, and surfing lessons on the beach.