A charming city nestled on the banks of the Rhine, Mainz, Germany lies southwest of Frankfurt and is replete with historic buildings and famous museums. The city's Altstadt district meets the river's edge and boasts a variety of beautiful and fascinating landmarks.

Alter do Chão is a riverside village in the Brazilian state of Pará, on the banks of the clear Tapajós River. Though part of the larger municipality of Santarém, Alter do Chão has its own rhythm and identity, known far beyond Brazil for the white-sand beaches that appear when river levels drop between July and December. One of the most famous spots is Ilha do Amor (Love Island), a sandbar just off the village shore that feels almost like a hidden world of warm water and bright sky.

Yorkshire, known as "God's Own County," is a must-visit destination for those seeking a blend of stunning natural landscapes, rich history, and vibrant culture. The largest county in England, Yorkshire boasts the breathtaking Yorkshire Dales and North York Moors national parks, where rolling green hills, picturesque villages, and dramatic cliffs meet expansive heather moorlands.

Kalmar Union, combination of the crowns of Denmark, Sweden, and Norway, effected at Kalmar, Sweden, by Margaret I in 1397. Because all three crowns were elective, the union could not be maintained by inheritance. Margaret's successors controlled Sweden intermittently until Gustavus I of Sweden dissolved the union (1523). Norway became independent in 1814.

Pärnu, often called Estonia’s “summer capital,” is a charming seaside city known for its long sandy beaches, historic architecture, and vibrant spa culture. Located along the coast of the Gulf of Riga, Pärnu has been welcoming visitors since the 19th century, when it became one of Northern Europe’s premier spa destinations.