The tours will be your last chance to get behind the hoardings, see the new stations under construction and experience this major infrastructure project at work.
An underground chamber only occasionally open to the public is about to have its first ever opening during the winter months.
Tideway, the company building the super sewer under the Thames, has recently completed a key milestone with the excavation of its first Tunnel Boring Machine (TBM) launch shaft.
A disused tram tunnel under Holborn is set to be restored by Crossrail after it served an innovative purpose during the tunneling work in the area.
A set of drawings made nearly 200 years ago for the Thames Tunnel at Rotherhithe can been put up for sale by the descendants of the Brunels who designed the tunnel.
When it opens next year, the Elizabeth line's station at Liverpool Street will be so long that it creates an entirely new link to the Northern line that was never possible before.
A new museum has opened in London, and deep underneath, it has the ultimate toy -- it's very own private tube tunnel railway, and you can go for a ride in it.
As part of the London Open House weekend, there will be tours of four Crossrail sites to see the work that is converting them into future Elizabeth line stations.
New images released by Crossrail highlight the progress being made with the architectural fit out of the future Elizabeth line underground stations in central London.
As part of the Northern line extension to Battersea, two new ventilation shafts are required, and the design for one of the them has been revealed for public comment.
The London Transport Museum has announced a fresh series of tours of disused tube tunnels and buildings, with tickets going on sale next week.
An experimental tube tunnel dug in the 1970s, then sealed up and never seen again, until recently. A recent structural inspection has taken photos of this little known part of London Underground's history.
After a couple of years of work, the Post Office Railway will start to take its first passenger trips through the tunnels under London next month.
There's an experiment taking place that might see old underground ticket offices turned into new potted gardens.
A short walk from Big Ben is a large exhibition about the tunnels under London, and -- much more importantly -- a working tunnel boring machine, made from Lego.