Dealers will be compelled to verify identity of customers buying art for €10,000 or more

Commercial and non-commercial enterprises combine as the most important event in the German art calendar gets underway

David Zwirner's idea that art fairs tax top dealers to support younger galleries signals major concerns over the fragile ecosystem of the art market

Art Chengdu and JingArt aim to join the first rank of the country’s burgeoning events calendars

From a gallery floor-turned-treadmill at Alexander Levy to Aztec inspiration at Barbara Wien

The work is the largest in the artist's most sought-after series of pathbreaking Modern nudes

Our pick of highlights from upcoming auctions

Steven Tananbaum has paid $13m for three sculptures over a five-year period but still has not received any of the works

Our pick of highlights from upcoming auctions

First-time exhibitors give Art Cologne a boost

Annual Hiscox report estimates online market rose 12% to $4.22bn in 2017, but growth is slowing as platforms struggle to build trust and loyalty

Despite soaring rents in the area, Unit London will open in former Citibank building on Hanover Square in June

New shows at commercial galleries, from emerging names to rediscovered talents

What's the key to its success?

Galleries, benefitting from Milan's April buzz, are already reporting healthy sales

Rarities of any era attract multiple bidders, but a lack of competition for standard fare kept prices flat

Chinese authorities tried to stop the UK auction of the Tiger Ying vessel, which was taken by a British soldier in 1860

Third edition to highlight spiritual, cultural and commercial links between the continent and parallel regions

Instead of exhibiting at Art Cologne, the Basel gallery von Bartha will host a show in Mike Meiré's apartment in the city

São Paulo galleries have survived the country’s crises with a mix of adaptation and collaboration

Announcement comes days after auction house reinstates buyer's premium in online sales

Falling pound may account for 21% drop in 2017, but exports to China have risen by 350%

"We need more support than I can generate via sales alone", says founder

Our pick of highlights from upcoming auctions

With an emphasis on the French scene, the fair walks a fine line between boosterism and parochialism

This year marks the tenth edition of the fair

Painting of artist’s lover and muse comes to auction for the first time at Christie’s New York in May

The ritual objects include Mezcala and Chontal sculpture, plus Olmec stone celts

The only fair dedicated to Caribbean art hopes to be an engine for the island's recovery, bringing in locals and visitors

The heirs' attorney describes ruling as step closer to recovering "largest mass-theft in history," but Richard Nagy plans to appeal