Replete with windmills and old-world charm, the village of Kinderdijk lies east of Rotterdam on the Lek River and is a popular stop for European river cruises. Home to the largest concentration of old windmills in the Netherlands, Kinderdijk was designated a UNESCO World Heritage Site in 1997.

Durmitor National Park is found in the Dinaric Alps, located in northwestern Montenegro. Along the Tara River Canyon, one of the deepest in Europe, Durmitor features nearly 50 limestone peaks interspersed with clear glacial lakes and deep pine forests.

Slovakia is a country shaped by mountains, castles, and centuries of shifting borders. Tucked in the heart of Europe, it offers visitors a chance to explore medieval towns, alpine peaks, and deep-rooted traditions still practiced in daily life. Bratislava, the capital, sits along the Danube River and is one of the few national capitals that borders Austria and Hungary.

Karlsruhe, located in southwestern Germany near the French border, is a city known for its unique radial layout, rich cultural life, and role as a hub for law and technology. Founded in 1715, the city was planned around the iconic Karlsruhe Palace, with streets radiating outward like the spokes of a wheel.

Katakolon, also known as Katakolo, is a charmingly small port and fishing town on the coast of Greece. A primary entryway to the nearby ancient ruins of Archaia Olympia, Katakolon is a popular stop on many Mediterranean cruises. Before heading to Olympia, be sure to unwind on the warm Grecian sands of Paralia Katakolo or savor a bite of fresh seafood at one of Katakolon’s quaint cafés.

Located on the Yellow Sea in northwest South Korea, it is a large port city.