The 6 km long tree-lined avenue is the oldest and longest double row of black pine trees in Hungary and a protected nature preserve. Fenyves Allee, landscaped by Count (later Prince) Tasziló Festetics II, leads from the south-western end of the former castle park through the former estate to the little castle in Fenékpuszta and the Roman ruins. The count probably opted for the black pine - of which 900 were planted - because the tree changes its foliage into an umbrella shape as it ages. This creates a Tuscan flair that was much loved by Tasziló Festetics and his Scottish wife Mary Hamilton. The section of the avenue north of Szendrey Major and the southern part, between Újmajor and Fenékpuszta have completely different characters and ambience. The avenue is very popular with dog enthusiasts, but also ideal for walking, nordic walking and cycling.