It has been said that if you see just one city in Italy, perhaps even one city in all of Europe, make it Rome. With ancient treasures such as the Pantheon, Colosseum, and famed Trevi Fountain, there’s almost more to see and do here than a single trip will allow. In addition to the Roman Forum and the Vatican, you’ll also want to leave time to explore modern Rome through its outdoor markets and restaurants. The Eternal City is the ultimate European destination throughout the year, offering visitors a different experience in every season.

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If you see just one city in Sweden, make it Stockholm. The cultural, political, and economic center of the country, the city is one of the most beautiful capitals in all of Europe. Stroll along the cobblestone streets and beautiful waterfront in the medieval city center, or hop a boat and explore the surrounding 14 islands that comprise the archipelago. Don’t miss the renowned Nobel Museum and fascinating Vasa Museum, which houses an intact 16th-century ship that was recovered from the ocean floor.

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From the royal family to the iconic phone booths of yesteryear, London is a land that perfectly pairs history with modern times. Often draped in a misty fog cloud, this isle offers something for everyone. Fashion and shopping fans will enjoy time spent on Oxford Street while the foodie in your group takes in the legendary tea time at Harrod’s. Abbey Road is an epic spot for music and quaint bookshops, and who can travel to London without a trip by “Big Ben”, the London Bridge, and Buckingham Palace?

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From hilltops to beaches, this vibrant city on the Mediterranean Sea offers the perfect blend of historic charm and modern convenience. Street art tours and a visit Sagrada Familia Church reveal the influence of names like Gaudi and Dali. To experience a taste of Barcelona’s modern culture, be sure to take a stroll along the bustling La Rambla boulevard, visit the enormous outdoor Boqueria market, and sample a variety of tapas at the city’s many bars and cafes.

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