ABC News and other media have recently highlighted sleeping in a giant wine barrel at the Wine House Hotel in Lamego, Portugal, but do you know about other cool and unusual places where you can spend the night?

1. A windmill from the 18^thcentury

If you have ever wondered what it would be like to sleep in a windmill, well in Portugal you can for as little as $100 (90€) per night. Moinho da Sentais an updated windmill from the 18^thcentury that can accommodate up to four people, located just 1-hour north from Lisbon, in the Natural Park of Aire and Candeeiros Natural Park Mountains. In a traditional and secluded setting, this 1-bedroom windmill is equipped with a kitchenette, one full bathroom and a fireplace. On the top floor there is a large panoramic window overlooking the mountains, and a living room with a pullout sofa. Moinho da Senta is perfect for those looking for a quiet natural getaway, and it is close to hiking in the mountains.

2. A bubble in the mountain to sleep and stargaze

Fall asleep while counting the stars inside a transparent bubble in the Portuguese countryside. Located in the Malcata Mountains, between the city of Castelo Branco and the Spanish border, Moinho de Maneio is a small rural tourism operator offering the dreamy experience of sleeping under the stars. Standing on top of a wooden platform and surrounded by trees for extra privacy, the bubble is an inflated round tent with nothing but a double bed and nightstand inside. A bathroom is available in a nearby wooden shelter and guests can also access the bathroom in the main complex. And to complete the off-the-grid stay, breakfast can be served inside the bubble upon request. Rates start at $112 (100 €).

3. A tree house

Considered a backyard staple in the US, tree houses are an up and coming Eco tourism experience offered in Northern Portugal. Located about an hour away from Porto airport, Pedras Salgadas Spa & Nature Park features original and sustainable tree houses, designed by architect Luis Rebelo de Andrade to merge with the surrounding landscape. The houses have panoramic and ceiling windows to observe the park, a double bed and lounge area, and a full bathroom and are equipped with a kitchenette.

4. A floating house

Floating houses are not a new idea – the Dutch have been living on houseboats for centuries – but they are a new and original way of exploring the great Alqueva Lake in south Portugal. Set in the Amieira Marina, in the district of Evora, project FloatWing offers a fully equipped house with one double bedroom, one bathroom, living room, kitchen and dining area, as well as a small outside patio and sunbathing terrace on the roof. Each floating house is mobile, as it has its own our-board motor, and self-sufficient for a maximum of 7 days, featuring sun panels for increased energy efficiency. The maximum capacity on board is six people, and it has room to accommodate up to four guests.

5. A 16^thcentury Fort

Used as a strategic defense point for the Azores dating back to 1555, the Fort of São Sebastiao is now home to the inn Pousada Forte de Angra do Heroismo. Set inside the original fort walls, the property offers modern amenities and décor, two swimming pools and sea views. The Fort is close to the center of the historic city of Angra do Heroismo, a UNESCO heritage site in the Azores, and 30 minutes by car from the Lajes International Airport.