On this day in 1999, Prime Minister Tony Blair officially opened the doors to Boro's new Rockliffe Park training complex.
Having already moved to a brand new all-seater Riverside Stadium and brought a host of international stars in the mid-1990s, the next stage of Chairman Steve Gibson's vision for Boro was the construction of a world-class training facility.
Club officials visited elite sporting complexes across Europe to help draw up designs, while land was acquired at a disused Rockliffe Hall in the quiet village of Hurworth-on-Tees to put those plans into action.
And it was on this day 21 years ago that the world class facility was officially unveiled, with then PM and Hurworth MP Tony Blair cutting the ribbon.
With perfect pitches in a picturesque setting, as well as indoor sports hall, gymnasium, medical facilities, and changing rooms, it's a facility that continues to attract envious eyes two decades on.
It's not only Boro that have called the complex their home - we've also temporarily housed elite teams including New Zealand's All Blacks and the Brazilian Olympic team.
The neighbouring Rockliffe Hall has also since been renovated into a five-star hotel, complete with spa and international-class golf course.
As well as being Boro's first team base of operations, Rockliffe is also home to our category one Academy.
Take a look at photos from the official opening of Rockliffe Park in the gallery above.