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National Marine Park · Greece

Alonissos National Marine Park

Alonissos National Marine Park is the largest marine protected area in Europe, offering a rich habitat for rare marine life and crystal-clear waters ideal for eco-tourism and underwater exploration.

National Marine Park558,000 acres4+ Trails

Designation

National Marine Park

Total Wilderness Area

558,000 acres

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Alonissos National Marine Park

Alonissos National Marine Park is the largest marine protected area in Europe, offering a rich habitat for rare marine life and crystal-clear waters ideal for eco-tourism and underwater exploration.

Wilderness Landscape & Natural Heritage

Established in 1992, Alonissos National Marine Park is located in the Northern Sporades archipelago of the Aegean Sea, Greece. It encompasses the waters surrounding the islands of Alonissos, Peristera, Gioura, Kyra Panagia, and several smaller islets. This marine park spans approximately 2,260 square kilometers, protecting one of the most significant habitats for the endangered Mediterranean monk seal, as well as diverse marine flora and fauna, including dolphins, sea turtles, and numerous fish species. The park is characterized by steep underwater cliffs, caves, and Posidonia oceanica seagrass meadows, which are vital for marine biodiversity. Visitors to the park can experience activities such as swimming, snorkeling, scuba diving, and boat tours, all set against a backdrop of pristine, turquoise waters and rugged island landscapes. Aside from its marine components, Alonissos Island offers hiking trails through olive groves, coastal forests, and traditional villages where visitors can explore local culture and history. The marine park serves both conservation and sustainable tourism goals, balancing human enjoyment with the protection of its fragile ecosystems. Its remote and relatively unspoiled nature draws eco-conscious travelers seeking wildlife encounters and natural beauty.

Field Guide · National Marine Park
Adventure Destinations

Notable Destinations Near Alonissos National Marine Park

Scenic viewpoints, outdoor landmarks, and notable points of interest within 30 miles.

Mystical Beauty of Ayion Oros★ 9.2⌖ 79 miExploring Monasteries
Ayion Oros

Mystical Beauty of Ayion Oros

Explore the serene beauty of Ayion Oros, an area steeped in history and natural splendor. Best visited by ferry, the region offers stunning hiking opportunities, unique monastery visits, and incredible birding. Ideal for adventure seekers looking for a tranquil, remote experience.

Exploring MonasteriesView Details→
Majestic Heights: The Acropolis of Athens★ 3.4⌖ 82 miWalking
Acropolis of Athens

Majestic Heights: The Acropolis of Athens

Explore the Acropolis of Athens, a iconic cultural site with stunning views. Experience walking tours and sightseeing in this historically rich area. With easy access from Athens, it's best visited in spring or fall to avoid the crowds.

Delight in Delphi★ 8.5⌖ 86 miExploring Ancient Ruins
Delphi

Delight in Delphi

Visit the iconic Delphi Archaeological Site in Greece, suitable for adventure seekers and photographers alike. Explore a range of temples and theaters, bask in the stunning views of Mount Parnassus, and uncover historical insights. Best in spring or fall to avoid busier summer crowds.

Exploring Ancient RuinsView Details→
Muses Plateau: Mountain Majesty Near Litochoro, Greece★ 7.8⌖ 102 miHiking
Muses Plateau

Muses Plateau: Mountain Majesty Near Litochoro, Greece

Muses Plateau near Litochoro offers moderate hiking with expansive views of Mount Olympus and surrounding forests. Accessible by a short drive, it’s great for hiking, climbing, and wildlife viewing. Visit late spring to early autumn for the best experience and stunning natural scenery.

Majestic Mount Olympus★ 9.2⌖ 103 miHiking
Mount Olympus

Majestic Mount Olympus

Explore Mount Olympus, Greece's highest peak, with trails ranging from challenging hikes to historical ruins. Enjoy stunning views and diverse ecosystems. Best explored in spring and fall, Olympus is perfect for adventure seekers and nature enthusiasts.

Meteora: Greece's Majestic Rock Formations★ 9.5⌖ 125 miSightseeing
Meteora

Meteora: Greece's Majestic Rock Formations

Explore the impressive rock formations of Meteora near Kalabaka, Greece. Known for its unique geological structures and ancient perched monasteries, it's a photographer's haven. Visit during spring and fall for hiking and breathtaking views amidst historical settings.

SightseeingView Details→

Key Wilderness Highlights

✦ Habitat and breeding grounds of the endangered Mediterranean monk seal✦ Crystal-clear waters with underwater caves and seagrass meadows✦ Scenic hiking routes on Alonissos Island offering panoramic Aegean Sea views✦ Traditional villages like Patitiri with rich cultural heritage and harbors
Wilderness Recreation

Outdoor Adventures in Alonissos National Marine Park

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Hiking

Available in Alonissos National Marine Park
Park Recreation

Wildlife Viewing

Available in Alonissos National Marine Park
Park Recreation

Scuba Diving

Available in Alonissos National Marine Park
Park Recreation

Snorkeling

Available in Alonissos National Marine Park
Park Recreation

Boating

Available in Alonissos National Marine Park
Park Recreation

Kayaking

Available in Alonissos National Marine Park
Park Recreation

Photography

Available in Alonissos National Marine Park
Park Recreation

Bird Watching

Available in Alonissos National Marine Park
Park Recreation

Fishing

Available in Alonissos National Marine Park
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Alonissos National Marine Park.

Passes & Fees

Entrance Requirements & Interagency Passes

No entrance fee; activities regulated by the marine park authority with permits required for diving and boat tours in protected zones.

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Adventure Basecamps

Gateway Towns Near Alonissos National Marine Park

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Alonnisos
⌖ 0.13 miles
Gateway Basecamp

Alonnisos, Thessaly

A tranquil Aegean island offering pristine nature, crystal-clear waters, and abundant wildlife, perfect for outdoor enthusiasts seeking sea and land adventures.

Late Spring to Early FallExplore Town
Alonissos
⌖ 0.13 miles
Gateway Basecamp

Alonissos, Thessaly

A serene Aegean island town known for crystal-clear waters, rich marine life, and quiet natural beauty that draws outdoor lovers seeking sea and land adventures.

Late Spring to Early FallExplore Town
Alonissos
⌖ 0.13 miles
Gateway Basecamp

Alonissos, Greece

A peaceful island retreat that combines rugged landscapes, pristine marine environments, and authentic Greek island culture for outdoor enthusiasts.

Late Spring to Early Fall (May to October)Explore Town
Alonnisos
⌖ 0.13 miles
Gateway Basecamp

Alonnisos, Greece

A serene Aegean island offering pristine natural beauty, rich Mediterranean landscapes, and a peaceful atmosphere perfect for outdoor enthusiasts seeking sea and land adventures.

Late spring to early autumn (May to October)Explore Town
Skopelos
⌖ 6.64 miles
Gateway Basecamp

Skopelos, Thessaly

A lush, green island offering serene beaches, forested hills, and clear waters for a tranquil yet active outdoor escape.

Late Spring to Early FallExplore Town
Skopelos Town
⌖ 6.64 miles
Gateway Basecamp

Skopelos Town, Thessaly

A charming coastal town offering a blend of island hiking, water sports, and cultural exploration amid lush landscapes and Aegean Sea views.

Late Spring to Early FallExplore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Alonissos National Marine Park

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

12 bookable experiences

Availability, pricing, meeting details, and fulfillment are provided by the applicable operator or booking partner.