A narrow residential house, known as "nha ong" in Vietnamese or "tube house" in Hanoi. AFP
Tall, thin and brightly coloured, Hanoi's "tube houses" dominate the city's streets as nine million people compete for space in Vietnam's bustling capital.
Although Vietnam saw a number of villas and garden houses built during the French colonial period, Hanoi has few of these grand residential homes.
Instead, tree-lined streets are packed with dwellings that are barely four metres wide, but are three times that in depth.
Typically, a tube house might be home to a family of four but two or three generations of relatives sometimes have to jostle for space.
The first tube houses -- known as "nha ong" in Vietnamese — are thought to have appeared in the capital at the end of the 19th century, when villagers looking to sell silver, traditional herbs and tools began to move to the area.
A narrow architectural style evolved from the limited available space, said Tran Quoc Bao, a senior lecturer at the National University of Civil Engineering.
This aerial photograph shows narrow residential houses in a densely populated urban area of Hanoi. AFP
The design is still a favourite in modern day Hanoi, where architects now refer to them as "adjoining houses".
"This model of house is essential for an urban architect (today). The adjoining house is a combination of both the traditional and modern residence," the Hanoi-based lecturer told AFP, adding that they can also be found in many other Vietnamese cities.
Nguyen Thai Binh swaps his flip flops for bulky boots ahead of snowboarding practice on the sand dunes of southern Vietnam — the unlikely training ground for the country's fledgling winter athletes with mountain-sized ambitions.
A pair of five-seater helicopters to offer passengers aerial views of the limestone towers, cruise ships and the odd houseboat dotting Ha Long's green waters for the maiden flights on Friday.
Rainbow-coloured hot air balloons ferried giddy visitors over Vietnam's ancient city of Hue on Sunday for a festival organisers hope will kickstart a passion for flying in the tourist hotspot.
Lingerie giant, Victoria's Secret, bids adieu to its angels as it welcomes on board seven women achievers for a "dramatic shift" in its image.
The hack was first created to deal with the humidity of Korean summers.
In the summer of 2020, Arctic Ocean ice melted to its second lowest level on record, according to US scientists, caused by a combination of global heating and natural forces.