They can be precise--they could take out a radar installation on a building without leveling the building.

FORBES: Page 2 of 2

The Nairobi UN building has the largest solar power installation in Africa and has provided a valuable lesson in renewable energy investments.

UNESCO: MEDIA SERVICES

Friday's final installation, raising the building's height to 1, 776 feet, makes One World Trade Center the tallest skyscraper in the U.S. and third-tallest in the world, although building experts dispute whether the spire is actually an antenna a crucial distinction in measuring the building's height.

WSJ: Spire permanently installed on WTC tower

The installation at the Battery Maritime Building was constructed to be entirely acoustic, meaning no electronics are employed to create the sounds.

NPR: David Byrne Plays the Building

While the building still has significant construction before its scheduled 2014 opening, the installation brought cheers from New Yorkers, and from people around the country.

CNN: Crews finish installing World Trade Center spire

The Company also involves in industrial installation, steel structure, the production of concrete, building decoration, landscape construction, railway construction and electric power businesses, among others.

FORBES: China State Construction

La Vitrine, a cultural information and last minute ticket booth, currently has a playful interactive light and video installation by Moment Factory, that will move to a new building, scheduled to open this autumn.

BBC: The Quartier des Spectacles, Montreal's Broadway

Two of the best are " Ice Lights", a light-installation at Vancouver City Hall that looks like ice framing the historic building, and " The Birds", a pair of larger-than-life bird sculptures that once stood sentry at the site of the Olympic Village and now roost at the Southeast False Creek Plaza.

BBC: Vancouver after the Games