​Chinese conceptual artist and political activist Ai Weiwei has placed his latest refugee-themed installation — a black rubber boat with 258 figures onboard — in Prague, the capital of a European Union country that has opposed the bloc's efforts to redistribute migrants among member nations.

The giant piece, titled Law of the Journey, attests to Ai's concern with the plight of migrants who embark on the dangerous journey to Europe by sea.

He visited 20 refugee sites across the world, including the Greek island of Lesbos, an entry point for many migrants trying to reach western Europe from Turkey.

Czech Republic Ai Weiwei

In Law of the Journey, the Chinese activist artist has created for the Czech gallery one of his biggest artworks so far: a 70-metre-long inflatable boat with life-size figures of 258 refugees. (Petr David Josek/Associated Press)

"To refuse somebody so desperate is almost a crime," Ai told The Associated Press.

"It's immoral, it's short-sighted, and it is not going to benefit this nation. We cannot lose our fundamental beliefs in human rights and human dignity."

APTOPIX Czech Republic Ai Weiwei

Hanging from the ceiling of the National Gallery's Trade Fair Palace in Prague, the site-specific installation was made in a Chinese factory that produces dinghies used by actual refugees, according to the artist. (Petr David Josek/Associated Press)

His largest piece so far, the 70-metre-long black rubber boat hangs from the ceiling at the National Gallery's Trade Fair Palace. The site-specific installation that went on exhibit Thursday was made in a Chinese factory that produces dinghies used by actual refugees, Ai said. 

The 59-year-old artist has exhibited similar works elsewhere. He used 14,000 discarded life vests collected from the beaches of Lesbos to wrap the columns of Berlin's Konzerthaus and to create lotus blossoms floating on a pond in Vienna's Belvedere park.

Ai Weiwei art installation refugees

Ai has made a series of artworks referencing the international refugee crisis. In February 2016, he bound life vests worn by refugees to the columns of a Berlin concert house. (Clemens Bilan/Getty)

The artist also posed as Alan Kurdi, a Syrian toddler whose lifeless body was famously photographed lying face-down on a Lesbos pebble beach. Ai was criticized for exploiting the child's tragic death.

More than 1.2 million people have crossed the Mediterranean to Europe since 2015, data from the International Organization for Migration show. According to the European Commission, the Czech Republic has so far accepted 12 migrants for relocation.

Ai Weiwei as Alan Kurdi

Another work inspired by his encounters with refugees has sparked controversy: a portrait in which the Chinese artist posed to recreate the heartbreaking photo of drowned Syrian toddler Alan Kurdi. (Rohit Chawla/India Today)