The Sierra del Caramulo Tondela belongs to the municipality of Viseu. It's a mountainous area of granitic origin, in fact the mountain is populated by villages with typical granite houses. A couple of miles away is Caramulo, you can climb to the highest point of Caramulinho that is 1075 meters high. From this point, on clear days you can see A Serra da Estrela and appreciate the green fields with yellow flowers and enjoy the stunning scenery while breathing in clean, fresh mountain air. In this area you can find the origin of the medicinal waters of Caramulo. Not far from there, you can also go to the Mirador "Cabeço da Neve" to admire the beautiful landscape Besteiros Valley to get an idea of what the area is like. And after all that walking,if you're not too tired, you can go down to the town of Caramulo to eat at the restaurant "Varanda da Serra" which offeres delicious local foods.
It is very similar to a place in San Carlos de Bariloche at Nahuel Huapi Lake in Argentina. It is a platform where you can walk and where people take photos and you can also sit with your feet dangling into the lake. There are people swimming in the water or sunbathing.