The Southampton forward joined his England teammates on a trip to the Complexo Esportivo da Rocinha in Rio which is situated on the edge of the Rocinha favela - home to 70,000 people.
The sports complex has played a central role in the regeneration of the area since it was opened in March 2010 and members of the Three Lions squad were treated to a dazzling display of the Brazilian martial art capoeira while they were there.
Capoeira combines elements of dance, acrobatics and music - and strikers Danny Welbeck and Daniel Sturridge were seen taking part in the action with the locals.
Daniel Sturridge attempts Capoeira watched by Adam Lallana during a visit to Complexo Esportivo da Rocinha
Lallana, 26, said: "It's really humbling coming to an area like this but it's also great to be able to make some kids' days.
"The dance routines they put on for us proves they've got some talent and it's great to be able to give something back. I wasn't tempted to take part though - I'm not very confident when it comes to dancing! But obviously Sturridge and Welbs were so I left it to them."
Following the visit, The Football Association confirmed that Roy Hodgson's squad will donate a five figure sum to the sports complex through the England Footballers Foundation charity.
Earlier on, the Three Lions trained in front of the picturesque Sugarloaf Mountain at their Urca base and welcomed over 100 children and locals to watch.
The favela in Rio that the England squad visited on Monday
Everyone bar Alex Oxlade-Chamberlain took part in the session but the Arsenal forward did go through some running drills for the first time since picking up a knee injury against Ecuador last week.
Lallana added: "We trained this morning and got our work done but it's great to be able to come down here today and see some of the sites in Brazil.
"It's quite a different backdrop to where we trained today - this is reality - it's where 70,000 people live in favelas. When I got told about it I didn't quite believe it but now I'm here you realise how it's possible. It's quite a surreal experience."
The view from England's training base at Urca in Rio de Janeiro
Lallana is hoping to start his first competitive match for England when the team's World Cup campaign kicks off against Italy in Manaus on Saturday.
He has six caps to his name but revealed being named in the starting XI this weekend would be a dream come true.
He said: "It would mean the world to me to start against Italy but the main thing is we get the the points. Whether that's me contributing off the bench or from the start, the result is all that matters.
"I've got a few days training left to impress the manager but it's healthy that there's competition for places. That's all we can ask for. It's a good feeling because we all want the same outcome and that's to win."
