The world's longest pedestrian suspension bridge opened in Sochi National Park, Russia. It's not really meant to serve your daily commute, though - the bridge is part of the Sochi Skypark. The 439-meters-long bridge was built over a 218 meters chasm and it attracts bungee jumpers and sightseers alike. The Sochi Skypark Bridge was developed in collaboration with New Zealand, and it took 5 years, 740 tons of metal and 2,000 cubic meters of concrete to construct. The bridge and the bungee platform are suspended by 8 cables - each of which is rated to hold 300 tons. Those who have the opportunity to visit Sochi can take a stroll along the huge structure overlooking roads, rivers and mountains 218 meters below. Those that feel more adventurous can get in line for a bungee jumping experience - there are several different points on the bridge from which to jump.

The Greek IRS is preparing to sell, through an online auction, 1,500 villas in tourist resorts in the country, such as Santorini, Rhodes, Kos, Porto Heli, Paros, Mykonos and other, because their owners do not comply with their tax obligations. After having exhausted all relevant stages, from the notice to the seizure, the next step for the Operational Collection Unit and the Recovery Control Center for Taxpayers with Great Riches, is the auctions in order to enable the Greek government to collect taxes from the wealthy that are hiding from IRS. "The money might have gone abroad, real estate, however, have stayed in Greece", say the administrator staff of the Ministry of Finance, who is handling the case. The Finance Ministry plans to auction the said real estate through the electronic auction platform e-Auction that the Hellenic Republic Asset Development Fund's (HRADF) uses for the sale of public real estate. They believe that they will attract a strong interest from abroad (from wealthy Arabs, Russians, Americans, Chinese, Germans, etc.), because they are premium properties, as opposed to apartments and residential properties that have lost their value, or land without clear legal ownership status that scare investors, which results in their auctions proving infertile. The Finance Ministry bets that there will always be those financially strong who will seek to acquire a privileged or unique property with just a few clicks. The draft for the auction of such property has other advantages as well: Instead of the IRS chasing people with low incomes and create a humanitarian issue, they aim at owners with expensive and luxurious properties who can live in smaller houses, which they usually own. Moreover, the high value of property (hundreds of thousands or even millions of euro), is a guarantee that the government will find money to settle the debt in full, so that the debtors will not remain "captives" of the IRS.

The 3D printing revolution is almost at the point where there can be a printer in any home. But what about using a printer to build the house itself? The Dutch company DUS Architects is working on doing just that. They've developed a 3D printer 10 times the size of ordinary ones. It's called the KamerMaker, which means Room Builder, and they've built it out of a shipping container, with the goal to 3D print an entire house! Using bio-plastics, the on-site printer can create the pieces of a canal home that the firm is currently building as an experiment over the next few years. One aspect of construction they're testing is the ability to reduce waste. The bio-plastic is based on rapeseeds, and if the manufactured piece is slightly out of spec, it can be ground up and reused. Also, because the pieces are all made on site, there's less trial and error, and therefore fewer resources are wasted. Some think the on-site model will increase construction time but that's all part of the experiment. The architectural firm is even thinking of other material possibilities, like a wood-based liquid that hardens into something like MDF, or biodegradable products that could be used for temporary structures, then melted back into the earth after a season. At the Canal House, pieces ranging from around 3 meters tall (which take a week to print) to room components with built-in furniture will be fitted together and filled with insulating concrete, creating not only a new building, but also the opportunity to learn how these revolutionary techniques can be best used on the building sites of tomorrow. A couple of decades ago, the very idea of robo-printing a house, or 3D-printed anything would have been considered science fiction; existing only in a Star Trek universe or similar. In just a few short years, the 3D printing industry has grown by leaps and bounds, and we're currently seeing everything from 3D-printed food to prosthetic limbs, furniture items, and now even full-scale buildings. During his visit to the Rijksmuseum in Amsterdam, The 3D Print Canal House was presented to United States' President Barack Obama by the Mayor of Amsterdam Eberhard van der Laan.

The World Cup 2014 completed, but our eyes are focused to the Mineirao stadium. This 1965 soccer stadium in Belo Horizonte was recently equipped with a whopping 6,000 solar panels on its roof just in time for the international competition. An initiative by local electricity company CEMIG, this is the first ever World Cup stadium completely powered by the sun. Originally built in 1965, the public listed Estadio Governador Magalhaes Pinto is one of this year's World Cup venues. Topped with 6,000 rooftop solar panels, it doubles as a complete photovoltaic solar plant (USF) capable of supplying power to 1,200 households. The plant was built by the Minas Gerais State Electricity Company (CEMIG), in partnership with German bank kfW and Minas Arena, the group that manages the Mineirao. Because the panels produce more energy than is necessary to power the stadium (1,600 megawatts-hour per year), 10 percent of the remaining power goes directly to regular consumers. It will be distributed to surrounding homes, giving back to the local grid with clean energy. Although the Mineirao is the First World Cup stadium completely supplied by solar power, is not the first one in the world. This idea takes inspiration from Germany's Freiburg and Switzerland's Bern stadium, which also works thanks to the brightest star. Estadio Mineirao opened its solar-savvy doors in 2013. German bank KfW and CEMIG provided funding for the massive US$ 16.1 million stadium power plant project.

A luxury villa in Majorca where Diana, Princess of Wales once stayed has been put on the market for US$ 52 million, making it the most expensive property on the island. Castillo Mallorca, located on its own private peninsula has been put up for sale by German-based real estate agents Engel and Voelkers. The 1,400-square meter property is about 20 minutes from Majorca's capital Palma de Mallorca. The villa includes a sauna, gym, piano lounge and billiards room. The main house - there is also a guest house - contains a "Lady Diana" suite which is where the princess stayed. Guest houses, a swimming pool, gardens and terraces also feature in 6,000 square meters of land. Despite Castillo Mallorca's heavy price tag the agents handing the property are pretty confident about a sale. There had already been interest from Chinese, Swiss and Spanish buyers, he added. "This is a unique property in a unique location and we think the current German owner will get something very close to the asking price," a spokesperson for Engel and Voelkers told The Local.