In Ljubljana, the majority of Art Nouveau buildings are within the city centre, meaning you don’t have to walk very far. Why don’t you start at Miklošičeva street and work your way down to Prešeren square?
You can start with the Cooperative bank building, that attracts attention immediately. The strong coral red colour adorned with a geometric pattern that reminds me of carnation flowers. There’s a reason it’s one of the most photographed buildings in Ljubljana.