micro.interventionssuper- minimum interventions (micro-actions) able to change the perception of a public place that we usually don't care about; precise and hyper local design solutions to enable the creation of what we call "urban situations".

piano staircaserolighetsteorin + VW | Stoccolma, 2009http://www.youtube.com/watch?v=2lXh2n0aPyw&feature=player_embedded

they provided a simulation of a piano within the staircase,the singular steps really could play,people had fun,interact with other people to compose melodies,and they realized that people actually used more staircase than mobile escalators.

Why did it work?What do they use as a trigger element?

_something unexpected,_something strange_something plyaful,_or also something really “affordable”(affordance is the property of things of naturally invite you in)

wallpeoplecollaborative project, 2010http://wallpeople.org/http://www.arkinet.com/articles/wallpeople-the-largest-photo-mural-in-town

Wallpeople simultaneously in 10 cities of the world, asked people to collaborate in an art installation collective project in public spaces, each person has to just bring a picture and place it in a position on the wall, near to what they decided.then, after a while (1 hour) every citizen coul pick a pictures (of other people) and bring a piece of the installation home

Why did it work?What do they use as a trigger element?

_the willing to complete and collaborate to the opera_the possibility of participating at something collective_the possibility of interacting with people

What happens to the perception of the space?_form a place that I usually don’t carea boute, they was able to create a “memory” about the place, they attached a meaning to the place...

play or rewindcliostraat, Siena 2001http://www.cliostraat.com/show.php?baby=131

a series of temporary and very very simple “invitation to use”, a shift from a public plaza to a public playgroundsomething that can be easily rewinded

Why did it work?What do they use as a trigger element?

_something unexpected,_something strange_something plyaful,_mis-use / completely change the meaning of the place

muro di SormanoIFdesign, Sormano 2006http://www.ifdesign.it/ifweb.pdf

it was a cycling path, and they just put some informations about distances, history... in the path physically.So that bikers coul in a way enjoy more the travel

Why did it work?What do they use as a trigger element?

_providing informations_inviting to read them_invitation to enjoy_making the place more beautiful

risorgimento squareMa0, piazza Risorgimento Bari 2006http://www.ma0.it/load_bari_piazza.swf

a series of bences in the plaza that could be rotated around, just i,you can choose where to sit and how to face the sun, how to become distant or close to someone else in the square...

Why did it work?What do they use as a trigger element?

_the willing to modify and customize_the possibility of participating at something collective_the possibility of interacting with people

What happens to the perception of the space?_a place that now I can use!

field partyKazuyo Sejima | Tokyo, 2010

A workshop to requalificate a Tokyo suburbs where neighborhoods usually don’t go and don’t interact.They organized an event: a barbecue, with 100 barbecues, spread in the space, each barbecue served just 1 part of the meal, so that people has to walk around, travel the space and interact with other people while cooking their own dinner.“The party looks disconnected, but people share the coming dusk together, and they were happy”.

Why did it work?What do they use as a trigger element?

dead dropsAran Bartholl | New York, 2010http://deaddrops.com/

dead-drops originally are secret places to leave informations in spy language.Now there’s a digital dead-drops. Aram Bartholl put a lot of usb keys coming out from urban walls.What would you do it?Wouldn’t you be curious to hang your laptop?It’s really becoming a hip.it’s the contemporary “bookcrossing”, would you leave any message?

Why did it work?What do they use as a trigger element?

before I die wallChandy Chang | lots of cities, 2009http://civiccenter.cc/beforeidie/

Candy Chang repeated in several wall this unfinished exhibition, simply asking people to complete “before i die i want” ____________In a few days citizens filled the wall up!

Why did it work?What do they use as a trigger element?

pagina biancaart kitchen | Bo, Mi, Fi, Na, Vr, Fe, 2009http://www.artkitchen.it/portfolio/la-pagina-bianca/

plazas like white paper.with a lot of tools availabe to write and draw.plazas like conceptually places to be written, places on which providing a personal story, a personal contribution

Why did it work?What do they use as a trigger element?

intermediomader lopez / Cordoba 2008http://www.maiderlopez.com/portfolio/intermedio-2008/?lang=en

The lines painted on a plot represent the future houses that will be built there. Intervention on a pot. Córdoba City Hall, Spain, 2008.anticipation / preview of what will be in an empty plot

Why did it work?What do they use as a trigger element?

bus stop derbyGoodby Silverstein & Partners | San Francisco, 2010http://folliacreativa.com/2010/12/06/guerrilla-yahoo-bus-stop-derby/

San Francisco / intra-neighboorhood game competiont at the bus stop,Citizens can contribute to the score of their neighborhood playing while waiting the bus (boring activity).at the end of 10 weeks the neighborhood with the highest score won a hhuge party organized by the muicipality

Why did it work?What do they use as a trigger element?

tokyo manneraa.vv | Tokyo, 1976-1982http://pinktentacle.com/2010/08/vintage-tokyo-subway-manner-posters/

A project from 70s, posters that in a funny way remind to underground useres some basic good manners (like dont’ sleep on the metro, don’t occupy too much space, ....)

Why did it work?What do they use as a trigger element?

Pink Puffs Roll Instant Playgroundtopotek, 2004http://cca-actions.org/actions/pink-puffs-roll-instant-playground

Twenty-four inflatable pink rubber objects and fifteen foam cubes were installed in a temporary playground beside a horse pasture in Wolfsburg, Germany, for the 2004 State Garden Show.

The pink landscape created by the structures was designed to evoke childrens’ toys and contrast with the natural surroundings.

There are no fixed uses for the objects in the Temporary Playground: they are both shelter and surface, capable of being rolled into any space, transforming a sidewalk corner or a vacant lot into a beguiling and playful garden.

Why did it work?What do they use as a trigger element?

swingingBruno Taylor | London, 2008http://www.designboom.com/weblog/cat/8/view/3682/playful-spaces-by-bruno-taylor.html

As part of Bruno Taylor’s series “Playful Spaces,” he installed a swing at a London bust stop.

this project is a study into different ways of bringing play back into public space.

it focuses on ways of incorporating incidental play in the public realm by not so much as having separate play equipment that dictates the users but by using existing furniture and architectural elements that indicate playful behavior for all.’

Why did it work?What do they use as a trigger element?

play me I’m yoursLuke Jerram | various cities, 2008http://www.streetpianos.com/

Street pianos are appearing in cities across the world. Located in parks, squares, bus shelters and train stations, outside galleries, markets and on bridges and ferries, the pianos are for any member of the public to enjoy and claim ownership of.

Reaching an audience of over 1,000,000 people worldwide, Jerram has installed over 300 pianos in 16 different cities so far.

Who plays them and how long they remain is up to each community. Each piano acts as sculptural, musical, blank canvas that becomes a reflection of the communities it is embedded into. Many pianos are personalised and decorated.

Why did it work?What do they use as a trigger element?

subway openingimprove everywhere | Manhattan, 2009http://improveverywhere.com/2009/03/18/subway-art-gallery-opening/

A temporary evening party with waiters and music players in the underground?

Why did it work?What do they use as a trigger element?

free hugsfree hugs campaign | London, from 2006http://www.freehugscampaign.org/

Free hugs is a real life controversial story of Juan Mann, A man whos sole mission was to reach out and hug a stranger to brighten up their lives.In the Spirit of the free hugs campaign, PASS THIS TO A FRIEND and HUG A STRANGER! After all, If you can reach just one person

Why did it work?What do they use as a trigger element?

home sweet bus stop homeMark A. Reigelman II | various cities, 2010http://www.markreigelman.com/

“Home Sweet (Bus Stop) Home” an art installation that re-create a home environent in bus-stops

Why did it work?What do they use as a trigger element?

paint grow soccer fieldMaider Lopez | United Arab Emirates, 2007http://cca-actions.org/actions/paint-grows-soccer-field

As part of the Sharjah Biennial, artist Maider López painted the lines of a soccer field red in a public square of Sharjah, adding goals on either end. Because pre- existing features such as benches and streetlamps were not altered, the square became a strange new site for football matches where spectators relaxed on benches inside the pitch at all hours. The project suggests a model for easy and relaxed integration of different activities. Maider López works on interrupting conventional space and architecture.

Why did it work?What do they use as a trigger element?

starwars subway carsimprov everywhere | NY subway, 2010http://improveverywhere.com/2010/07/14/star-wars-subway-car/

For our latest mission, we staged a reenactment of the first Princess Leia / Darth Vader scene from Star Wars on a New York City subway car. The white walls and sliding doors on the train reminded us of the rebel ship from the movie, and we thought it would be fun to see how people would react to a surprise appearance by the iconic characters. We spread out the actors along the train line, staging it so they would enter the right car at the right time. Enjoy the video first and then go behind- the-scenes with the photos and report below.

Why did it work?What do they use as a trigger element?

pixel notesDuncan Wilson, 2007http://www.multilinkmagazine.com/2007/12/19/pixel-notes/

Notes of different kinds make up the wallpaper, Pixelnotes from artist and graphic designer Duncan Wilson.The wallpaper is made up of four layers divided into individual squares resembling sticky notes.The notes can even be written upon and detached, exposing a different colored note from the layer beneath. As notes are removed, a pattern begins to reveal itself.

Why did it work?What do they use as a trigger element?

the world deepest binthe fun theory | 2009http://www.youtube.com/watch?v=cbEKAwCoCKw&feature=player_embedded

To throw rubbish in the bin instead of onto the floor shouldn’t really be so hard. Many people still fail to do so.Can we get more people to throw rubbish into the bin, rather than onto the ground, by making it fun to do?(a strange sound comes out from the bin when you throw the paper away)

Why did it work?What do they use as a trigger element?