Jason Kwok/CNN
Florentijn Hofman brought his eye-catching "Rubber Duck" to Hong Kong's busy harbor in 2013, but it's not the only time it's been shown. Hofman debuted the playpful piece in 2007, and has displayed it in Amsterdam, Osaka, Sydney and Sao Paulo, among other places.
ANS KLAUS TECHT/AFP/Getty Images
Ai Weiwei pays tribute to the migrant crisis by creating an installation in Austria. It is made using over 1,000 life jackets used by refugees.
JOEL SAGET/AFP/AFP/Getty Images
Street artist JR created the ultimate trompe l'oeil illusion when he covered I.M. Pei's famous Pyramid with a black-and-white photograph in May 2016.
Jeff Eden, RBG Kew
Originally commissioned and designed for the UK pavilion at the 2015 Milan Expo, Wolfgang Buttress' "Hive" is a light and sound installation controlled by bees.
©BlindEyeFactory/EdoardoTresoldi
No, you're not seeing a ghost. Edoardo Tresoldi's reconstruction of a destroyed basilica in Puglia, Italy was made of wire and mesh.
MARCO BERTORELLO/AFP/Getty Images
Constructed over Iseo Lake in northern Italy in June 2016, "The Floating Piers" saw 200,000 floating cubes united to create a runway the village of Sulzano to the island of Monte Isola.
DAVID BECKER/AFP/AFP/Getty Images
Swiss artist Ugo Rondinone certainly brightened up the Nevada desert with his colorful stacked boulders.
Courtesy Iwan Baan / Fondation Louis Vuitton
French artist Daniel Buren's "Observatory of Light" transformed the Fondation Louis Vuitton in Paris into a giant kaleidoscope.
Bruno Lopes / Courtesy of HOCA Foundation
During a residency with the Hong Kong Contemporary Art Foundation, Portuguese street artist Vhils used neon lights, acid and styrofoam to create works of art on the city's tunnels, trams and buildings.
Clemens Bilan/Getty Images Europe/Getty Images
Renowned Chinese artist Ai Weiwei covered the columns of the Gendarmenmarkt concert hall in Berlin with 14,000 discarded life jackets to highlight the number of migrants taking to the seas every day.
Courtesy KAWS and Yorkshire Sculpture Park/Photo © Jonty Wilde
New York artist KAWS brought his brand of street-inspired pop art to the Yorkshire Sculpture Park, installing six towering sculptures across the multi-acre outdoor gallery in the north of England.
JOEL SAGET/AFP/AFP/Getty Images
Olafur Eliasson installed 12 blocks of ice from Greenland in Paris' Place du Pantheon during the December 2015 COP21 climate change conference. The blocks melted away over 12 days, highlighting the effects of climate change.
Antony Gormley positioned 31 sculptures of naked, anatomically-correct men across a kilometer stretch in the heart of Hong Kong.
LEON NEAL/AFP/AFP/Getty Images
Alex Chinneck is known across the UK for his ambitious installations. In September 2015, he created a 35m-tall sculpture of an upended electric pylon in Greenwich.
Banksy's "bemusement park," a warped vision of the so-called "happiest place on Earth," was open for two months in Weston-super-Mare, England, before it was dismantled. The materials were then shipped to Calais to be turned into shelters for migrants.
Courtesy Edelman
Charles Pétillon's dream-like installation "Heartbeat," comprised of 100,000 balloons, was suspended inside London's Covent Garden for a month in 2015.
Rob Stothard/Getty Images Europe/Getty Images
Anish Kapoor originally designed this sculpture and observation tower for the 2012 Olympics in London. In 2016, with was modified to include the world's longest tunnel slide, designed by Carsten Höller.
Frank Martin/Getty Images
Richard Serra is one of the world's most famous minimalist sculptors. His "Tilted Arc" was installed in the Federal Plaza in downtown Manhattan in 1981, but it was taken down in 1989 due to public backlash.

Editor’s Note: Amy Bryzgel is a lecturer of Film and Visual Culture at University of Aberdeen. The views expressed in this commentary are solely those of the writer. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news analysis and commentary. The content is produced solely by The Conversation.

Story highlights

In its relatively short history, installation art has always been controversial

Many works seem to straddle the line between amusement park attraction than high art

Famous installation artists include Richard Serra, Ai Weiwei and Olafur Eliasson

CNN  — 

Bulgarian artist Christo – who is best known for his massive “wrapping” of buildings and other monuments – unveiled his latest installation, “The Floating Piers.”

If you visited Italy’s Lake Iseo before July 3, you could have experienced what it’s like to walk on water.

On setting foot on the piers, a floating dock system of 220,000 high-density polyethylene cubes which undulate with the waves, visitors will experience the closest approximation to what it’s like to walk on water.

Seem like a gimmick, or even more of an amusement park attraction than high art? Maybe, but installation art, in its relatively short history, has always been controversial.

The use of installation in contemporary art began to develop in the 1970s as a way of democratizing the art experience. Installation enables the viewer to have a more active role in the consumption of the artwork, rather than passively viewing it.

As such, the meaning of the artwork was no longer just about what the artist wanted to express, but about the viewer’s experience of and interaction with it.

MARCO BERTORELLO/AFP/Getty Images
Until July 3, visitors to Lake Iseo in northern Italy could stroll along a three-kilometer-long walkway across the lake.
MARCO BERTORELLO/AFP/Getty Images
The Floating Piers -- a free installation by artist Christo -- let the public walk between the mainland and the lake's two islands.
FILIPPO MONTEFORTE/AFP/Getty Images
Hikers in the mountains surrounding the lake had a bird's-eye view of the piers.
MARCO BERTORELLO/AFP/Getty Images
Some 270,000 people turned up in the first five days.
FILIPPO MONTEFORTE/AFP/Getty Images
Visitors could walk on the piers from the town Sulzano on the mainland to the islands Monte Isola and San Paolo -- a tiny island with only one house which is framed by the floating docks.
MARCO BERTORELLO/AFP/Getty Images
The blocks were made of polystyrene and wrapped in 100,000 square meters of yellow fabric.
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"We chose this lake because of its marvelous location, the islands reach hundreds of meters above the sea and only 2,000 people live there," Christo tells CNN.
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Lake Iseo is located 100 kilometers east of Milan and 200 kilometers west of Venice.
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The installation is a once-in-a-lifetime experience, says the artist. Once taken down, the material will be recycled.

For example, one of Allan Kaprow’s earliest installations, “Apple Shrine,” involved visitors navigating a basement labyrinth of chicken wire, newspaper, cloth and straw, at the end of which they were allowed to take a piece away with them. They had to choose between a real apple, which they could literally consume (eat), or a fake one, which they could keep and preserve forever.

Art in public

Installation artists seek to move art into the public space, so that those who don’t usually frequent galleries could encounter it. This doesn’t often pan out as expected.

One infamous example was Richard Serra’s “Tilted Arc,” a site-specific installation on New York City’s busy Federal Plaza, constructed in 1981. The point was to alter the individual’s path as she or he crossed the plaza.

It sparked such a strong reaction – people were annoyed that they had to go around it, not to mention the fact that many found it ugly – that a public trial was held and a jury voted to remove it.

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"Tilted Arc" by Richard Serra in the Federal Plaza, downtown Manhattan

Because of its strong imposition on the landscape and in public spaces, installation art can also be effective in communicating a political or social message.

At the end of last year, Danish-Icelandic artist Olafur Eliasson, together with the geologist Minik Rosing, installed “Ice Watch” – 12 blocks of ice, taken from icebergs from a fjord in Greenland – in the Place du Pantheon during COP21, the Paris Climate Conference 2015.

Over the course of 12 days, those 12 blocks, arranged in a clock formation, melted away. The artist made climate change and its effects, for which there are still many skeptics, visible to all – not just the scientists and experts inside the meetings of COP21.

In February 2016, Chinese artist Ai Weiwei, who is outspoken on the subject of human rights and whose work is often political, covered the columns of the façade of Berlin’s Konzerthaus with bright orange life vests taken from Lesbos, the Greek Island that has become a gateway for refugees fleeing to Europe.

The installation coincided with the Berlinale Film Festival. Although the intention was to commemorate those who died at sea in their attempt to escape war and persecution, the artist was criticized for the location of installation, seeing as Germany has taken in more refugees than any other European nation.

Art and beauty

But such “public” art does not always have to be political.

The work that Christo – the walking-on-water artist – began creating in the 1960s with his partner Jeanne-Claude didn’t aim to pander to particular debates. They maintained that their principle aim was to create objects of beauty.

By intervening in a landscape or wrapping up a building in cloth, such as the Reichstag in Berlin, they invited the viewer to look again, see something anew, and appreciate the aesthetic qualities the new artwork brings.

The artists continued to make installations together until 2009, when Jeanne-Claude died.

“The Floating Piers” is Christo’s first installation since his partner’s death. Similarly, aesthetics and emotion seem to be the principle message.

The public nature of all of these installations enables the beauty of contemporary art to be appreciated by those who wouldn’t normally set foot into an art museum or gallery – and the placement of some of them allows for a social and political message to be communicated to a wider audience.

While Christo’s piece enables the visitor to walk on water, Eliasson’s and Weiwei’s works both bring home powerful messages about important social issues in a more visceral manner than perhaps a news item or report might. And that, after all, is the power of installation art.