Vallisaari.

Vallisaari, a small island near Helsinki, seamlessly blends history and natural beauty. Once a military fortress, it now welcomes visitors to explore its fascinating military history through remnants like old fortifications and the Alexander Battery. The island's diverse ecosystems boast lush landscapes, vibrant wildlife, and a plethora of butterflies and moths, making it a nature lover's paradise. Well-marked trails, including the 3-kilometer Alexander Tour, guide adventurers through enchanting woodlands to stunning views of Helsinki and the open sea. With amenities such as picnic areas, a café, and accessible paths for families, Vallisaari offers a serene escape perfect for relaxation and exploration amid its captivating history and beauty.