Ljubljana is Slovenia’s capital and biggest city, known for its mix of history and modern energy. It has roots going all the way back to Roman times and sits in a beautiful location between the Adriatic and the Danube regions. The city is where the main airport is and makes a great home base for exploring other parts of Slovenia. With its lively culture, charming old town, and plenty of things to do, Ljubljana is a must-see for any trip to Slovenia.