Blue Cave Swim, Lady of the Rocks & Submarine Tunnels

Set off on a speedboat tour that showcases the best of Boka Bay’s scenery while adding a cinematic twist with a stop at a little-known military site. The route takes in Our Lady of the Rocks, a swim stop at the Blue Cave, and the atmospheric submarine tunnels once used to shelter naval vessels.

The journey begins at Our Lady of the Rocks, a church situated on an artificial island just off Perast. Your guide shares the local legend of two brothers who found a Madonna and Child icon here — a discovery that inspired the construction of the island and the church that stands on it today.

From there, you’ll cruise through the bay’s dramatic landscape, passing the narrow Verige Strait before reaching the outer bay. Along the way, you’ll see Mamula Island with its notable fortress, and follow the coastline of the Luštica Peninsula.

For many visitors, the highlight is the Blue Cave. To preserve the natural environment, local regulations now require all motorized boat engines to stay outside the cave. This means you’ll enjoy a quiet and clean atmosphere, free from noise and fumes. The boat anchors just 10 to 20 meters from the entrance, giving confident swimmers the chance to glide directly into the cave and see the famous glowing blue water from the inside.

On the return journey toward Kotor, you’ll step into a different part of the bay’s history with a visit to the Old Submarine Tunnels. This stop offers a memorable and atmospheric contrast to the rest of the route — a quiet, secluded spot that feels far removed from the usual tourist path.

This experience is designed for travelers seeking signature landmarks, a refreshing swim, and a unique “secret base” stop — all combined in one smooth route to discover Kotor Bay’s hidden gems.