The London Stadium has already gone through plenty of transformations in its seven-year existence and is currently going through one of the most dramatic yet.
Major League Baseball may only officially be coming to town next week — but they have already been behind the scenes since June 3 bringing the ground up to specification for the visit of the New York Yankees and the Boston Red Sox.
Sportsmail got a unique insight into the construction work earlier this week, and with 10 days before the first pitch, has taken a look at what the process has involved.
West Ham United's London Stadium is undergoing a dramatic makeover ahead of hosting Major League Baseball this month
The pitch, which usually plays host to Premier League matches, has been converted to be fit for purpose for baseball
This is the view from the home plate where batters will take to the stand, attempting to hit a home run to bolster the score
The renovation process has involved around 110 people and has involved the crew walking 16-hour days to get it all done
It is a process that has involved around 110 people who have been working 16-hour days and seven days a week to transform this area of east London into a tiny pocket of the United States.
While the work started in June, the plan has been drafted, rejigged and then redrafted again since 2016. It explains why it is such a smooth process.
There are crews from all around the world working on the London Stadium. There's one from Holland, Canada, another from the United States and a handful of workers who have been flown over from Mexico, making a total of around 40 overseas employees.
Murray Cook, MLB field and stadium consultant, said: 'You couldn't ask for a better team to put together this thing.
'In 2013 we started looking at playing in the UK, but as far as the overall construction we started on the third of June. It's a well made plan with a well made group of guys here, contractors from the UK and the USA and it's a multi-national operation.'
It has been a conversion that has been planned, drafted, rejigged and redrafted again since discussions back in 2016
A number of the materials have been shipped over from the US specifically in order to ensure the surface meets standards
They have had plenty to work on. The artificial turf seen in the photos released on Wednesday is actually the fourth layer on the West Ham pitch.
Beneath lies a protective layer used for concerts, the grass used for the Premier League and then the track and field setup that was seen back in 2012.
The clay used for the diamond has had to be brought over specifically from the United States to meet the usual standards. It has been shipped over from Slippery Rock, Pennsylvania, and is the same clay that two-thirds of teams in the MLB have in their grounds.
Within the diamond, other elements have had to be sent over. The mound
