More than 600,000 visitors — both Greek and foreign — flock here to witness the incredible natural spectacle, located 26km from the city centre. From July to September, butterflies swarm in their thousands, seeking cool and damp conditions. In the mornings, you'll see them clustered in hundreds on the branches.

Saarbrücken has plenty to offer to the lovers of architecture, and one unmissable landmark is the city's town hall, built at the turn of the 20th century in neo-Gothic style and designed by Georg Von Hauberrisser, whose works also include the town hall in Munich.

Housed in a historic building, The Cinema Museum holds Spain’s first and most significant collection of cinematic history, thanks to the visionary Tomàs Mallol. Acquired by the city in 1994, his private collection forms the core of this public museum. It traces over 400 years of visual storytelling through 25,000 artefacts — from magic lanterns and zoetropes to early cameras and projectors — making it one of Europe’s most comprehensive archives on pre-cinema and early film. Beyond the permanent exhibition, the museum hosts temporary shows, educational workshops, and a specialised library. While some displays are labelled primarily in Catalan and Spanish, introductory materials are available in English, French and German.

Surrounded by the Brda River, Mill Island is a cultural and recreational hub in the heart of the city. Here picturesque mill buildings from the end of the nineteenth century stand along cobbled tree-lined streets. There are a number of interesting museums to explore in the area.