This sustainable capital city will charm you with its beautiful sea-facing landscape, diverse architecture and world-famous design. While the city is modern and lively, the archipelago and green forests are quickly reached via an efficient public transportation system for those looking for nature.

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.

York, England, is a city where over 2,000 years of history comes to life. Originally founded by the Romans in 71 AD as Eboracum, York has witnessed the rise and fall of empires, from the Vikings to the Normans. Today, the city retains its medieval charm, with its historic York Minster, one of the largest Gothic cathedrals in Northern Europe, standing proudly as its centerpiece.

Known as the "Garden Island," Kauai is Hawaii's oldest island and a tropical paradise. Covered with verdant rainforests, glittering waterfalls, and immense cliffs, Kauai will astound you at every turn. This island is the perfect destination for outdoor adventures, with activities from kayaking, to ziplining, to snorkeling. Better yet, marvel at the island's natural beauty, from the scenic cliffsides of Nāpali Coast State Wilderness Park to the resort beaches of Poipu.

Phillip Island, a serene escape located just 90 minutes from Melbourne, Australia, is a natural wonderland that entices visitors with its stunning coastal landscapes and unique wildlife experiences. The island is most famous for its Penguin Parade, where every evening at sunset, hundreds of little penguins—the smallest penguin species in the world—waddle ashore to their burrows on Summerland Beach.

Glenwood Springs, Colorado, is a picturesque resort town famous for its geothermal springs. Nestled in a scenic canyon of the Rocky Mountains where the Colorado and Roaring Fork Rivers meet, Glenwood Springs will enthrall you with its natural beauty, including towering red sandstone cliffs, snow-capped mountains, and lush forests.