The essential fashion item if you are going to the Beijing Olympics to watch people compete in air made of Jello - a gas mask. Gas masks are all more or less terrifying to look at, which is why some people get a kick out of them, creating artsy fetish masks, or artists create ironically cute masks such as Bill Barminsky's Mickey Mouse mask.The irony is on the artists, however, since genuine Mickey Mouse inspired gas masks were given to children in both the UK and the US, during wartime, to appear less scary

The sight of a Zeppelin under construction must have been an awe inspiring experience. The hangers that were constructed for this purpose are the largest structures even created and the lightness required for the Zeppelin frames meant that their trusses consisted of sophisticated aluminum struts where each strut was in turn another truss. The overall effect is of incredible complexity and detail, like a gigantic high-tech whale set in a space that resembles a Piranesi engraving of a dungeon with enormous shafts of sunlight lit by dust. Because of their age, this technological look is combined with distinctly archaic elements, such as the gas bags which were made from thousands of cows' stomachs or the scaffolding and ladders which are wooden and rickety.

No other chair extracts more money than the one you sit in to have teeth extracted. Dental chairs have become a testing ground for high tech wizardry and ergonomics, evolving from decorative Victorian models worthy of Dr. Frankenstein's lab., to space-age pods with insect-like composite limb attachments.

Despite the appearance of permanence that historic buildings create, many if not most of the worlds famous cities have been almost entirely destroyed either by war, property speculation or Ayn Randian architects. They have been rebuilt, either as replicas (Warsaw) or even in the image of the culture that destroyed them (Hiroshima). Here are images where either we or others have matched up locations for incredible before and after shots.

A gallery of giant ears. Before electronic RADAR, acoustic listening devices were like giant mechanical ear trumpets which could locate sounds and even calculate distances by bouncing sound waves in exactly the same manner that SONAR works in water. Ear trumpets themselves were only fully replaced by electronic devices in the middle of the 20th Century, because of their conspicuous nature, they were often hidden in anything form beards and wigs to table ornaments.

From a skyscraper's lights that can be controlled by passers by, to the legendary rock set design of Mark Fisher and Jonathan Park here are some examples of the worlds largest screens. Vote for your faves.

Cheap hi-fis sometimes come with lots of flashing lights and buttons, sound terrible and are difficult to use. Expensive ones often to come with not much more than an on/off switch and volume control, and sound great.One of things that happens in a mature market is that people go for quality rather than quantity - what this means in technology is less features and better design. Apple is the first technology company to go mainstream with a minimalist, mature-market design ethos, but there are others. Here are our current favorite (non-Apple) minimalist gadgets. This is a chart that we will be continually updating, over time. Vote for your favorites:

As technology companies oozed slowly from San Jose to San Francisco, the architecture morphed from purely university campus, to a hybrid between this and a South of Market warehouse, complete with loft living accoutrements such as foosball tables. The new Facebook HQ is a perfect example of this, looking something like a Wholefoods, whereas Google looks more like the place full of plastic balls that you leave your kids when shopping at IKEA.

Here are some of the best finds from the last month, that didn't fit into any particular category but were special, nonetheless. From the workshop where the Statue of Liberty was being made, to a Chinese factory with people working inside a steam press, a mockup plane for taxiing practice and an impossibly thin air tensegrity structure bridge, vote for your faves.

Everything from cars to cargo ships can be nuclear powered, not just aircraft carriers or submarines,. If you want a really wild motor for your vehicle here are some real examples of nuclear engines. To avoid more well known examples, we have not included carriers and submarines in this chart, and we have tried to link to images of the actual engines. Vote for your faves.

They don't make cheesy electronic board games like they used to. You might remember playing Clue with your friends in your adolescence, but these 12 retro electronic board games are under the radar and long forgotten. Whether it's racing against the clock to overcome the Omega Virus or shopping in the clearance section in Mall Madness, these games are sure to bring back some fond memories.

Being tall and thin means that one of the common but nevertheless unusual uses of old silos is to house climbing walls. Old silo structures, from underground missile silos to towering grain stores are often interesting pieces of industrial archaeology and make unconventional architectural conversions.

If you are as persnickety as we are, then you also possibly fantasize about having lots of gadgets that are tiny and foldaway in beautiful, intricate transformer-like fashion.Here are our picks from big to small: houses, helicopters, cars, boats, beds, computers, coat hangers. even if you've seen these things before, there is something satisfying about putting all these things in one place.

Solar cookers are reflectors which focus sunlight enough to heat food, but they are a simple eco-friendly gadget that happens to look interesting and comes in a large variety of interesting forms.Because solar cookers are shiny and look like satellite dishes, they have a particularly futuristic appearance which often creates an extreme contrast with the surroundings where they are used, as some of these testify.

If you have a hi-fi a TV, cellphone, computer and digital camera you already own several sets of speakers, amplifiers, microphones, screens and cameras. The idea of modular gadgets appeals on multiple levels, from Zen minimalism to the joy of playing with Legos.Here are some of our favorites.

The idea of uniform is that you all look the same, yet there is an ornathological variety of ceremonial military parade outfits, with as many brightly colored feathers. The images chosen here range from the Italian Carabinieri who are allowed to wear aftershave and sport outfits designed by Valentino, the French Foreign Legion’s sappers who have to have long beards and wear leather aprons and carry axes, 7 Dwarves style, Iranian police who look like criminals, Russian women soldiers who wear mini skirts, now that Putin has reinstated the infamous May Day parades and Greek soldiers whose traditional unfrms are similarly feminine. We added the UK Queen’s husband at the trooping of the color. Wearing a 3 foot high bearskin hat may be a familiar image, but its’ no less weird.

Until very recently, dental surgery appears to have been carried out with carpentry equipment. In fact, quite literally, since early dental drills were adapted from woodworking equipment. Here are some of our favorites ranging from the beautiful to the macabre.

Henry Ford's car assembly line is a symbol modern manufacture, yet the town where it originated has become a ruin and Toyota is now worth ten times the value of both Ford and General Motors combined.Car manufacture moved to the next level with the widespread introduction of robotics, by the Japanese, however German car factories have recently created a truly futuristic vision of manufacture, where both architecture of the factory and the machinery within it, have become an integrated work of art.The Autostadt visitor center at the VW factory in Wolfsburg, which involved commissioning over 400 architects, features 200 foot tall robotic silos at the end of the production line (reminiscent of the people farms in the Movie, the Matrix), where customers can pick up their newly manufactured cars. In Dresden the VW assembly plant, designed by Hann is an eco-friendly, transparent building right in the center of the city, with glass walls and maple floors, where tourists are encouraged to view the cars being put together in pristine surroundings. Leipzig features possibly the world's most architecturally significant plant, a stunning building designed by the folks working at Zaha Hadid.