Furnas Valley: Your Essential Travel Guide to São Miguel’s Geothermal Heart
Furnas, a place where the Earth breathes, the water heals, and the local cuisine is cooked by a volcano. Located in the eastern part of São Miguel, the largest island in the Azores archipelago, Furnas Valley is a geological marvel and a must-see destination for any traveler seeking a blend of natural beauty, history, and pure relaxation. Get ready to explore the world’s largest “hydropolis”—a valley teeming with unique mineral waters and geothermal wonders.
Table of Contents
The Enchanted Valley: What is Furnas?
A Volcanic Legacy: Historical and Geological Context
The entire Furnas Valley is nestled within a massive dormant volcanic crater, one of the most active on São Miguel Island. This stratovolcano last erupted in 1630, but its power is still very much alive, making Furnas one of the most fascinating spots on the planet.
The area is defined by continuous geothermal activity—steaming fumaroles, bubbling mud pools, and mineral springs that serve as a powerful reminder of the island’s volcanic origin. This unique geological history has resulted in an incredibly fertile soil, creating the lush, vibrant, and enchanted landscapes that characterize the valley today.
The “Hydropolis” of the World
Furnas is often called the world’s largest “hydropolis,” a testament to its extraordinary wealth of mineral and thermal waters. Experts have classified up to 22 different types of mineral-medicinal waters in the area. Each spring has a distinct composition and temperature, with some being carbonated and cool, others hot and sulphurous. Locals and visitors alike have cherished these waters for centuries, believing in their therapeutic and medicinal properties, particularly for skin conditions and rheumatism.
Must-See Places & Things to Do in Furnas
Caldeiras das Furnas: The Steaming Heart of the Village
The Caldeiras Vulcânicas (Volcanic Caldeiras) are a dramatic display of nature’s power, right in the town center and along the lake shore.
Village Caldeiras: In the heart of the village, you’ll find close to 30 bubbling caldeiras and fumaroles, venting steam and the unmistakable scent of sulfur. Don’t miss the local tradition of boiling corn on the cob in the natural steam holes—a must-try snack!
Lake Caldeiras: The main attraction at the lake are the geothermal spots where the famous Cozido is cooked. The best time to visit is around noon (11:30 AM to 1:00 PM) to witness the restaurants and families retrieving the huge pots of stew from the underground holes.
Terra Nostra Garden: A Botanical Paradise & Iron Pool
Considered one of the most beautiful gardens in Europe, the Terra Nostra Garden is a sprawling, 12.5-hectare (31-acre) botanical masterpiece established in 1775.
The Thermal Pool: The park’s main draw is the massive, iron-rich thermal pool. The water, heated naturally to around 35°C to 40°C (95°F to 104°F), is famous for its therapeutic benefits.
The Gardens: Stroll through diverse botanical collections, including an incredible variety of camellias (best viewed in late winter/early spring), towering sequoia trees, and serene grottos.
Poça da Dona Beija: Thermal Relaxation
For a purely relaxing geothermal experience, head to Poça da Dona Beija. This thermal spa complex offers multiple pools of varying temperatures, surrounded by a lush, tranquil garden setting.
The Experience: The water here is known for its skin-softening properties. It’s an excellent place to unwind after a day of exploration.
Insider Tip: Poça da Dona Beija is open until late, making it a perfect spot for a magical nighttime soak under the stars.
Lagoa das Furnas: Lake, Cozido Holes & Gothic Chapel
Furnas Lake is a stunning crater lake ringed by lush peaks. The area is perfect for a gentle stroll, kayaking, or paddle-boarding.
Chapel of Nossa Senhora das Vitórias: On the lake’s south shore stands an iconic Neo-Gothic chapel, built between 1877 and 1888. Its intricate architecture is a captivating sight against the wild, natural backdrop.
Mata-Jardim José do Canto & Parque da Grená: Explore the surrounding green spaces like the Mata-Jardim José do Canto, which offers walking trails and unique gardens, or the recently revitalized Parque da Grená, featuring a stunning waterfall.
Miradouro do Pico do Ferro: The Crater’s View
For the definitive panoramic view of the Furnas Valley, head to the Miradouro do Pico do Ferro viewpoint. From here, you can gaze down into the massive caldera, observing the shimmering lake, the dense village, and the plumes of steam rising from the caldeiras—a truly breathtaking sight that encapsulates the power and beauty of São Miguel.
Gastronomy: Tastes from the Volcano
Cozido das Furnas: The Volcanic Stew
The Cozido das Furnas is the island’s iconic culinary tradition. This hearty Portuguese stew, consisting of beef, pork, chicken, sausages, potatoes, carrots, and cabbage, is not cooked over a fire, but by the Earth itself.
The Process: A large metal pot, filled with the carefully layered ingredients, is lowered into a hole (fumarole) in the volcanic soil near Lagoa das Furnas. The pot is then covered and left to slow-cook for about 6 hours using the natural geothermal heat.
Recommendation: To ensure you try this unique dish, you must call ahead and make a reservation at a local restaurant 24 hours in advance. The most popular spots include Tony’s , Restaurante Banhos Ferreos or Caldeiras e Vulcões.
Bolos Lêvedos & Volcanic Corn
No visit to Furnas is complete without tasting its local baked goods and snacks:
Bolos Lêvedos: These are slightly sweet, soft, and fluffy yeast cakes—like a cross between a Portuguese roll and an English muffin. They are delicious served fresh with jam, cheese, or used as a bun for local burgers.
Maçarocas de Milho (Boiled Corn): As mentioned earlier, don’t miss the chance to try corn on the cob cooked in one of the caldeiras in the center of the village.
Plan Your Trip: Essential Tips & Recommendations
When is the Best Time to Visit Furnas?
General: Furnas is wonderful to visit year-round due to the mild Azorean climate. The thermal baths are a great option even on cooler days.
Best Weather: The most pleasant time is generally between May and September, when the days are warmer and sun is more frequent, perfect for hiking and lake activities.
To Avoid: Try to avoid very rainy and foggy days, as the stunning views from viewpoints like Pico do Ferro can be obscured.
Pro Tips for Visiting the Hot Springs
The Stain Warning: The thermal waters in the Terra Nostra Park and Poça da Dona Beija are rich in iron and sulfur, which gives them their distinctive yellowish-brown color. This water will likely stain light-colored bathing suits and towels. Bring a suit you don’t mind getting stained, or an older, darker one.
Timing Cozido: To see the famous stew being pulled from the ground, aim to be at the Lagoa das Furnas caldeiras around 12:00 PM.
Bring Water: You can try the various mineral waters directly from the public spouts in the town center, but some have a very distinct sulfuric or metallic taste!
Getting to Furnas
Furnas is located approximately 45-50 minutes from Ponta Delgada (PDL).
Renting a Car : This gives you freedom to explore at your own pace, stopping at the many beautiful viewpoints along the south or north coast routes, but lacking historical information and curiosities from the culture of locals
Tour (Recommended) : Many full-day van tours leave from Ponta Delgada and cover all the main attractions in Furnas, including lunch with Cozido and a stop at the Gorreana Tea Plantation on the way back. When booking your tour notice that some companies charge less for a tour to Furnas Valley but don’t includes entrances in parks, tastings, thermal areas or lunch, which in the end you end up paying more than full included ones.
Public Transport: While possible, public transport can be infrequent and less convenient for hitting all the main sights in one day.
The Enchanted Valley awaits. Book your adventure to Furnas with Flowtours and experience the breathtaking geothermal wonders of São Miguel!
Conclusion
Furnas is more than just a destination; it’s an experience that awakens the senses and connects you directly to the vibrant, beating heart of the Azores. From the therapeutic warmth of the Terra Nostra thermal pools and the dramatic steam of the village Caldeiras, to the unforgettable taste of a meal slow-cooked by a volcano, the valley offers a powerful and unique blend of nature and culture.
Whether you’re exploring the rare botanical collections, soaking away your worries in the iron-rich waters, or witnessing the ancient tradition of the Cozido emerging from the earth, Furnas Valley promises memories that will last a lifetime. It’s a place of constant discovery, where the land tells the story of its fiery origins, and every bubbling spring offers an invitation to relax and recharge.
Ready to book your ultimate escape to this volcanic sanctuary? Let Flowtours guide you to the most beautiful and unforgettable corners of the Enchanted Valley.
Filipe Pedro
Olá! I'm Filipe, your dedicated guide to the enchanting Azores. Born and raised on these captivating islands, I've spent over 14 years immersed in the tourism industry, sharing the magic of Portugal with visitors from around the globe.
