Hidden in the tranquil countryside of Nagasaki Prefecture, the "Green Tunnel" in Unzen City’s Obama Town is a magical escape into nature. This unique destination, formed by lush trees arching over a former railway route, offers an otherworldly experience perfect for those seeking off-the-beaten-path adventures in Japan.

A Living Legacy of Japan’s Railway History

Once part of the historic Obama Railway, the Green Tunnel's path connected the charming towns of Obama and Aino. Today, this verdant corridor has transformed into Nagasaki Prefecture Route 201, a scenic drive that captures the harmony of nature and history. The remnants of train stations and platforms dot the route, evoking nostalgia for the days when steam trains chugged along these tracks.

Nature’s Masterpiece: A Scenic Journey Through the Seasons

The Green Tunnel shines brightest from spring to summer when fresh green foliage creates a natural canopy, casting dappled sunlight along the path. In every direction, visitors are treated to breathtaking views: glimpses of the sparkling Tachibana Bay, rolling hills, and the rugged coastline of the Nagasaki Peninsula.

Whether you're driving, cycling, or simply strolling through, the Green Tunnel immerses you in serenity and natural beauty. It’s a paradise for photography enthusiasts and nature lovers alike.

Why Visit the Green Tunnel?

The Green Tunnel is more than a scenic route; it’s a connection to Japan’s history and a testament to the timeless beauty of its landscapes. Whether you're seeking a peaceful retreat, an Instagram-worthy shot, or a deeper appreciation for Japan’s countryside, the Green Tunnel delivers an unforgettable experience.