6Sofia, Bulgaria

Sofia, Bulgaria’s capital, is a city with layers of history—from Roman ruins to Orthodox churches and Ottoman mosques.
Landmarks like Alexander Nevsky Cathedral and the Rotunda of St. George showcase the city’s architectural diversity. Sofia is also incredibly green, with many parks and easy access to nearby Vitosha Mountain, ideal for hiking or skiing. It’s a surprisingly affordable city with a vibrant arts and culinary scene.

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