Ushuaia, known as the City at the End of the World, is a destination located in the extreme south of Argentina and serves as a portal to Antarctica. Although its nickname may not seem immediately welcoming to families, the city offers various attractions suitable for people of different ages.
As the capital of the Tierra del Fuego province, Ushuaia is situated on an island, bordered by the Fuegian Andes and the shores of the Beagle Channel. Due to its geographical position, it has established itself as one of the main departure points for expeditions to both Patagonia and Antarctica.
To capture a distinct memory of the trip, there is a post office within the Tierra del Fuego National Park that allows visitors to send postcards with the 'Fin del Mundo' stamp and obtain a commemorative seal for their passport (the latter being a souvenir item, without immigration implications).
Spanning 689 sq km, Tierra del Fuego National Park is the only protected area in Argentina that combines marine, forest, and mountainous ecosystems in one place. The park features lakes, valleys, vast peatlands, and spectacular scenery.
One of the highlights of the tour is the end of National Route 3, in Lapataia Bay, where the world-renowned sign of the End of the World is located, symbolizing the terrestrial connection between Ushuaia and Alaska. Local wildlife also attracts attention, being particularly interesting for children, as unique birds such as the Magellanic penguin, the dabbling duck, and the black-browed albatross can be seen in the park's protected areas.
The End of the World Train is one of the most sought-after attractions in Ushuaia. This tour recalls a curious aspect of the city's history, which developed around one of the planet's most isolated prisons. This prison, which housed high-risk inmates until 1947, is also an unmissable visit in the city.
At that time, the inmates themselves were forced to cut wood from the neighboring mountains, transporting the material via a railway built specifically for this purpose. Currently, the End of the World Train covers about 7 kilometers of the original route of the former inmates, passing near Mount Susana, located west of Ushuaia.
With its red locomotive and the typical design of old steam trains, the tour starts at Estación del Fin del Mundo and lasts approximately two hours. The large windows of the carriages offer views of the landscapes of the Tierra del Fuego National Park, the Pipo River, and the Tree Cemetery, where trunks cut by the inmates are still found.
The Beagle Channel, located where the waters of the Atlantic and Pacific oceans converge, is a maritime strait that provides a privileged experience for those who wish to observe marine fauna and the landscapes located between Argentina and Chile. The channel was named in honor of the HMS Beagle, the ship on which Charles Darwin sailed during the 19th century.
During the crossing, visitors can find landscapes marked by slopes covered with Patagonian forests and snow-capped peaks. Among the main stops, Isla Alicia stands out, an ideal spot for observing the remarkable Patagonian sea lion. Bird Island primarily attracts imperial and black-necked petrels, as well as seagulls and other characteristic birds of Tierra del Fuego.
Another point frequently mentioned by tourists is the Les Éclaireurs Lighthouse. It is located on a small rocky islet of the archipelago, surrounded by the channel's landscape, making it one of Ushuaia's most famous postcards. There are also catamaran tours that reach Martillo Island for penguin viewing, with Piratour being the only authorized company to land on the island to allow walks near the penguins.
Located just 7 kilometers from downtown Ushuaia, Martial Glacier represents an excellent option for those seeking a genuine experience in contact with the mountainous environment, without having to travel far from the city. This destination is part of a beautiful protected natural area.
Access to the glacier's first viewpoint is via a properly marked trail, classified as moderate difficulty, which winds through lenga and ñire forests. The walk takes about 45 minutes. At the summit of the viewpoint, magnificent panoramic views of Ushuaia and the Beagle Channel open up. Even in summer, the location maintains a fairy-tale atmosphere, with snow and streams formed by melting, although the glacier has shown size reduction in recent years due to climate change.
Waking up during the middle of the night may be a behavior inherited from past generations. Before the advent of the Industrial Revolution, sleep patterns were segmented, which was a very common practice.
In the time before cell phones and electricity, most people did not sleep continuously. It was customary to go to bed a few hours after sunset and wake up again around midnight. During this intermediate period, people spent time talking, tending fires, or, in social contexts, visiting neighbors before returning to sleep until dawn. Historians call this practice 'segmented sleep.'
This custom is extensively documented in historical sources, covering over 2,000 references from Homer's Odyssey to medical and literary records, such as poems and letters. Authors of the time rarely needed to detail the concept of 'first sleep' and 'second sleep,' as it was a widely known habit.
Changes began with the Industrial Revolution, driven by Thomas Edison's invention of the incandescent lamp in 1879. The introduction of artificial lighting led people to postpone bedtime, resulting in the merging of the two sleep periods into a single continuous block, establishing the modern pattern.
Sleep scientists investigate the possibility that the ancestral pattern is the most suitable. They argue that the human body was not biologically designed to sleep without interruptions. Sleep science reveals that the body goes through distinct cycles each night, each lasting approximately between 90 and 110 minutes, encompassing light sleep, deep sleep (N3), and REM sleep.
Most people complete four to six of these nightly cycles. However, the most crucial phases occur in the first half of the night: deep sleep is vital for physical and immunological recovery, while REM sleep is responsible for emotional processing and daily memory. After these initial phases, the body predominantly alternates between lighter stages, indicating that waking up in the middle of the night is a perfectly normal event, something many people do repeatedly without even realizing it.
The real problem arises when this awakening prolongs or becomes routine, occurring at the same time night after night. In a clinical trial conducted in 1992, it was shown that participants could resume sleep in two phases when not exposed to clocks or morning light.
The cause of consistently waking up at the same time is not yet fully understood by specialists. For a long time, cortisol, a hormone that helps the body react to physical and mental stress, was associated with waking up completely at three in the morning, due to the natural increase in its levels in the blood near dawn.
However, a study conducted in 2025, monitoring over 200 individuals, observed that the hormone increase showed no variation at the exact time of awakening; the level continued to rise at a constant rate, regardless of whether the person was sleeping or awake. Researchers attributed this finding to the methodology used, which employed a subcutaneous tissue catheter to measure cortisol, instead of relying solely on saliva samples collected after waking. Nevertheless, they emphasize that variability among participants must be considered, and many of these questions remain without a definitive answer.
Another theory suggests that specific times may merely be the circadian rhythm in action, regulating sleep, hormones, and body temperature, excluding isolated cases. Furthermore, about 40% to 60% of women going through menopause are affected by interrupted sleep, which is attributed to the decrease in progesterone, which can compromise deep sleep.
Changes in blood sugar levels can also cause similar effects. If dinner is eaten early or is light, glucose may decrease during the night. The body responds by releasing stress hormones to raise this rate again, a mechanism that is sometimes potent enough to wake the person up completely. Such episodes are more frequent in diabetics, although they are not limited to this group.
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The Casa Aroeira project was conceived based on the analysis of the particularities of a steeply sloped plot of land, located in a closed condominium in the interior of São Paulo. The residence was planned to take advantage of an exuberant view, optimizing the implantation on the lot.
Due to the strong inclination of the land, the house was structured in its upper section. This arrangement allows for guaranteeing the best possible views and uses the corner of the lot to create two distinct types of access.
One of the accesses is level for pedestrians, serving on the side street, while vehicles use the lower street to access the garage.
