Thousands of Dutch fans at Sydney's Darling Harbour are distraught after watching their team's devastating World Cup loss.

Dressed in the bright orange of The Netherlands, crestfallen fans watched in disbelief as victory was snatched by Spain.

"We did well to even reach the final. But Spain were the better team tonight," Remuo Duursma, from Hornsby, told AAP.

Many Dutch fans were in tears after watching Spain score a late goal to win the match.

Six-year-old Jib Munnichs couldn't contain his grief after watching his heroes lose the World Cup 2010 final.

"He's very upset," Jib's mum, Jacky, told AAP.

"It's been a great atmosphere here, but we're sad to lose."

Heimerich Bisterbosch said he was gutted, lamenting his team's clear scoring chances.

"It is a great achievement for The Netherlands to even reach the final, but I have to say I'm disappointed," he told AAP.

Meanwhile, Spanish fans at Darling Harbour were celebrating jubilantly, after watching their country secure their first ever World Cup.

Thousands of football fans gathered at Sydney's Darling Harbour to watch the match, with the official FIFA Fan Fest big screen venue near capacity.

The big screens set up at Darling Harbour are one of only six official Fan Fest sites outside of South Africa.

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