Tottenham's new stadium will include the world's first retractable pitch, allowing the venue to hold both football and NFL matches, the club have announced.

Spurs' Twitter account released a video on Thursday to demonstrate the remarkable process, which will essentially see a football pitch built one layer above the NFL turf.

The stadium is due to open in 2018, while the club play their home matches 12 miles down the road at Wembley in the meantime.

Sheffield engineering company SCX have been recruited to build the retractable pitch, which will be the first of its kind anywhere in the world.

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The football pitch will be used solely for Spurs, while the NFL pitch below will be used additionally for concerts and other events inside the venue.

The turf for the football pitch will sit in three pitch-long steel trays weighing more than 3,000 tonnes each, which will then slide from under the South Stand and into the arena.

The levels of the tunnel and sidelines will then adjust to the correct height, with the entire process of NFL to football said to take approximately 25 minutes.

Spurs' new stadium will hold more than 61,000 when it opens next year, and the retractable pitch will take 12 weeks to install.

SCX - the company building the pitch - have enjoyed success previously, building retractable roofs over Centre Court and No 1 Court at Wimbledon, as well as movable turf at Royal Ascot racecourse.

Tottenham are likely to be itching to move into their new stadium in north London, given their torrid home record at Wembley.

Mauricio Pochettino's side have won just one of their 11 matches at their temporary home, but star man Dele Alli has backed them to turn it around this season.

"I think both teams, for Tottenham and for England, we need to make the place a fortress, we need to do as well as we can," he said.

"I think at Tottenham and England we have been playing very well, but more so at Tottenham the results haven't quite been going our way yet but I think there's no need to worry.

"I think if we were playing poorly, then it would be something to worry about.

"But we're playing very well, there's just a few things we need to tighten up on and we've been punished for a few, small errors and switching off at the wrong times in the later stages of the game.

"It is important that we work on that and keep improving, but I think the results will be coming soon."