The Metropolitan Line is a sub surface line was built using cut and cover so it has a different feel to it compared to the Bakerloo line. The line This 42 mile long line has was opened in 1863 and was extended in 1925 and has 34 stations on it This line currently uses S8 stock that replaced the A stock from the 1960's and has a top running speed of 62mph its the only underground line to travel this fast and does so on the long sections around Finchley Road. You can read in more detail on Wikipedia or watch the CAB RIDE
Please next time can you search for metropolitan line before you post as it has been suggested several times including recently
No reason not to. Unless it's a duplicate of their own thread, it's alright to post it again. It shows the interest in it.