Did you know the London Underground is 160 years old? The first station opened on 10 January 1863, which took commuters from Paddington and Farringdon.
TfL have released a special roundel to commemorate this momentous anniversary.
To celebrate, we've launched a new edition of our Transport for London puzzles, which now feature the brand new Elizabeth Line.
Available as a 500 and 1000 piece puzzle, the jigsaws feature the iconic modern day London Underground tube map, which was first designed in 1931 by Henry C Beck and based on circuit diagrams he drew for his day job as an engineer. The sprawling transport system has 270 stations and is made from 250 miles (400 km) of track. No other city is as recognised by its transport system as London. Its red buses, black cabs and Tube trains are known around the world.