And they’re absolutely right.
But what many visitors never realise is that beyond the famous wine estates lies an entirely different Portugal.
As the Douro River continues east towards the Spanish border, the vineyards slowly begin to disappear. Olive groves and almond orchards replace the vines. Granite hills rise above deep river valleys, medieval castles crown lonely hilltops and tiny stone villages appear almost untouched by time.
This is the Douro International Natural Park, one of Portugal’s least explored regions and one of the country’s greatest hidden treasures for cyclists.
It’s also what makes our Douro River Wine Country Bike Tour unlike any other cycling holiday in Portugal.
While most visitors stop where the vineyards end… our journey is only just beginning.
The following villages aren’t just beautiful places to visit. They form the heart of Portugal’s medieval frontier, where castles, fortified walls and ancient trading routes protected one of Europe’s newest kingdoms for centuries. Today, they remain some of the country’s most rewarding places to discover by bike.
Few places in Portugal capture the imagination quite like Marialva.
Long before Portugal existed as an independent kingdom, this strategic hilltop settlement had already been occupied by Romans, Visigoths and later the Moors. Following the Christian reconquest during the 11th century, King Afonso Henriques, Portugal’s first king, reinforced its importance as part of the young kingdom’s eastern frontier. Much of the impressive castle visitors see today dates from the 12th century, standing proudly above the surrounding countryside more than 850 years later.
Walking through Marialva feels like stepping into another era. Narrow granite streets climb gently towards the castle walls, where sweeping views stretch across the Beira countryside and it’s easy to imagine medieval knights guarding the frontier.
Insider Tip
Take time to explore both the castle and the village itself. Many visitors rush through the fortress without wandering the beautifully preserved stone lanes below.
One of the highlights of our tour is spending the night at the exceptional Casas do Côro. Created from a collection of carefully restored medieval houses, it has become one of Portugal’s finest boutique hotels, combining centuries of history with outstanding hospitality, regional cuisine and remarkable character.
Just a short ride from Marialva lies the peaceful village of Longroiva, another important frontier settlement whose castle dates largely from the 12th and 13th centuries.
Today, the village sits quietly among olive groves, vineyards and almond trees, preserving an atmosphere that has changed little over generations.
Unlike Portugal’s larger historic towns, Longroiva remains wonderfully authentic. There are no crowds, no souvenir shops and no queues—just quiet streets, warm local hospitality and a genuine sense of rural Portugal.
Insider Tip
Longroiva is connected to Marialva by a network of Grande Rota (GR) hiking trails that cross beautiful countryside filled with ancient stone walls, small farms and native woodland. If you’re extending your stay before or after your cycling holiday, it’s one of our favourite walks in the region.
Few places illustrate Portugal’s frontier history better than Castelo Rodrigo.
Perched high above the surrounding plains, this remarkable fortified village became one of Portugal’s most important defensive strongholds after the 12th century, protecting the border during centuries of conflict between Portugal and the kingdoms of Castile.
Today, Castelo Rodrigo is recognised as one of Portugal’s official Historic Villages, and for good reason.
Its defensive walls remain largely intact. Granite houses line narrow medieval streets. The castle ruins still dominate the skyline, while panoramic views extend across Portugal and into neighbouring Spain.
Walking through Castelo Rodrigo feels less like visiting a monument and more like discovering a village where history simply never left.
Insider Tip
Visit early in the morning or towards sunset. The warm granite glows beautifully in the evening light, and the peaceful streets become almost magical once most day visitors have gone.
The remarkable history of this region doesn’t begin with castles.
It begins over 20,000 years ago.
Near Vila Nova de Foz Côa lies one of the world’s greatest collections of prehistoric rock art, recognised by UNESCO as a World Heritage Site. Thousands of engravings depicting horses, deer, aurochs and mountain goats survive along the Côa River, making it one of the most important open-air archaeological sites anywhere on Earth.
Because these fragile engravings are protected, they can only be visited on guided tours organised by the Archaeological Park.
Insider Tip
If you’re spending an extra day in the region, booking one of these guided visits is one of the most memorable cultural experiences Portugal has to offer. Standing beside artwork created twenty millennia ago is something you’ll never forget.
Another outstanding stop is the beautifully preserved medieval town of Trancoso.
Its impressive walls and castle were strengthened during the 12th century under Portugal’s first kings before being expanded by King Dinis as the kingdom consolidated its eastern frontier.
Today, Trancoso remains one of Portugal’s finest walled towns, where visitors can walk ancient streets, admire the castle and explore one of the country’s richest collections of medieval architecture.
Insider Tip
Don’t miss lunch at O Museu Restaurante, one of our favourite restaurants anywhere in inland Portugal. Located within the historic centre, it celebrates traditional Beira cuisine with exceptional local ingredients and an excellent regional wine list. It’s the perfect place to slow down before continuing your journey.
Western sections of the Douro are famous for their vineyards. Further east, however, the landscape becomes noticeably different.
The endless vine terraces gradually give way to olive groves, almond orchards and rugged granite hills, creating a landscape that feels wilder, quieter and dramatically more remote.
The roads follow the natural contours of the terrain, climbing steadily across open plateaus before descending into deep river valleys carved over millions of years.
For cyclists, it’s an unforgettable contrast. One day you’re riding through UNESCO-listed wine country, and the next you’re exploring one of Portugal’s most fascinating historical frontiers.
One of the pleasures of cycling through this region is that the villages never feel isolated. Quiet backroads connect them through olive groves, almond orchards and open countryside, making the journey between them just as rewarding as the destinations themselves. Traffic is remarkably light, allowing riders to enjoy the changing landscape at their own pace.
Most visitors leave the Douro believing they’ve seen everything after visiting Pinhão and the famous wine estates. We believe they’ve only discovered half the story.
Our Douro River Wine Country Bike Tour was designed to reveal both faces of northern Portugal: the celebrated vineyards of the UNESCO-listed Douro Valley and the remarkable medieval frontier that stretches towards Spain.
It’s a journey through two landscapes, two cultures and more than a thousand years of Portuguese history – all experienced at the perfect pace from the saddle of a bicycle.
If you’re planning your own adventure, explore all our Douro River Bike Tours, or prepare for your visit with our complete guide to cycling in the Douro Valley.