The jungle itself appears to have given birth to the Pura Samuan Tiga, a sprawl of monumental gateways, staircases, and pavilions for joyous dance performances, sacrificial cockfights and the solemn placement of offerings.

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The vast scale of the site, 20 times bigger than the one at Zaragoza and more than twice as large as Aichi's, means covering long distances between pavilions, and there are also queues for buses.

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It also been reported that the Russian, Italian, French and Spanish pavilions are set to reopen and be kept standing for the next 50 years.

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Among the most powerful buildings are the Experience Music Project in Seattle, built for Microsoft billionaire Paul Allen, which features a series of brightly coloured pavilions with a monorail running through the centre.

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The gift reflects the outsized ambitions the retail-chain family has for the Crystal Bridges Museum of American Art, a complex of eight gallery pavilions it has helped build around a pair of ponds in the company's northwestern Arkansas hometown of Bentonville (population 35, 301).

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