The North Sea stretches between the coasts of Northern Europe, touching countries like the United Kingdom, Norway, Denmark, Germany, and the Netherlands

If you find yourself in Rotterdam, there's a strong chance you've arrived by water. This popular port city (the second largest in the Netherlands) has gone through an architectural renaissance since World War II, with daring, innovative structures dotting the city (cube houses!) and defining its skyline. Café culture is on the rise here, so grab yourself a table and a cup.

You'll know why picturesque Grenada is known as the "spice island" when you notice the scent of nutmeg, vanilla and cocoa in the air. Grenada's waterfalls, lush rain forests, volcanic crater lake, tiny villages, cocoa, nutmeg and banana plantations, rum distilleries, scenic hiking trips, pristine coral reefs, and hidden-away unspoiled beaches all make Grenada one of the most popular ecotourism destinations for those who like to discover off-the-beaten-track natural beauty and charm.

Osijek, located in the eastern part of Croatia, is a city that blends rich history, vibrant culture, and a lively atmosphere. Situated along the banks of the Drava River, Osijek is the fourth-largest city in the country and the cultural and economic center of the Slavonia region.

The Canary Islands, a Spanish archipelago off the northwest coast of Africa, offer far more than just sunshine and beaches. Made up of eight main islands, each with its own personality, the Canaries are a place where lunar landscapes, cloud forests, volcanic peaks, and historic towns coexist within short travel distances. On Tenerife, Mount Teide looms over a landscape of solidified lava and craters that look like a science fiction set.