What is the Best Metro/Subway System in Europe?

Over fifty (50) cities in Europe have metro systems from very small ones to mega systems that carry millions of people on a daily basis. What is your favorite system and why? (Is it because it carries a lot of people? It is an old system? The stations are really beautiful etc.) Comment below.

Which city in Asia has the best metro system? Share your opinion here!
https://www.youtube.com/watch?v=i_jVlhExLqU

Which European Capital has the best tram system?: Share your opinion here!
https://www.youtube.com/watch?v=7DxSCO1ccuw

Included are over 50 systems within Europe. Wikipedia was used to provide data such as daily ridership, length, opening year, and interesting facts. Please note that ridership can vary depending on the year and the years used for ridership are not consistent for this video.

Unless noted otherwise, ridership is weekday.

-Data is up to date as of 2018 - there are expansions happening across many systems in Europe, some footage used in the video may be old because it was difficult to find footage for certain systems or I was using my own footage from years ago. Changes are happening to a lot of metro systems and the video does it best to showcase as much up to date information as possible. Metro maps also proved to be a challenge to collect as some systems include heavy rail lines while others don't.
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Unless noted: ridership refers to daily weekday ridership
For complete videos of the system:

Amsterdam:
https://www.youtube.com/watch?v=dUCL51SUE1c

Athens:
https://www.youtube.com/watch?v=0mMNFui93yo

Barcelona:
https://www.youtube.com/watch?v=QNUKXmtzcPc&t=52s

Berlin:
https://www.youtube.com/watch?v=vg7FwBlsX4M

Brescia:
https://www.youtube.com/watch?v=VX9eF_KxIEU&feature=em-comments

Brussels:
https://www.youtube.com/watch?v=N7Hqbs78ALs

Bucharest:
https://www.youtube.com/watch?v=aRvagX7Y2ro&feature=em-comments

Budapest:
https://www.youtube.com/watch?v=P1IQJdBRGTg

Catania:
https://www.youtube.com/watch?v=Az5ahdSvtms

Copenhagen:
https://www.youtube.com/watch?v=59Ie-po7oLc&t=27s

Dnipropetrovsk:
https://www.youtube.com/watch?v=Y3VmMaumhCc

Genoa:
https://www.youtube.com/watch?v=mWGgPYUPpV8&feature=em-comments

Glasgow:
https://www.youtube.com/watch?v=1tLQSBc3On0

Hamburg:
https://www.youtube.com/watch?v=MSd76BF89o0

Helsinki:
https://www.youtube.com/watch?v=Mp1tL7EN50Y

Istanbul:
https://www.youtube.com/watch?v=9BLSN1J9Dwo&feature=em-comments

Kazan:
https://www.youtube.com/watch?v=GSOkQ31ZA8A&feature=em-comments

Kharkiv:
https://www.youtube.com/watch?v=z_myQZeU3rE&feature=em-comments

Kiev:
https://www.youtube.com/watch?v=y4N_haYMCbU&t=3s

Lille:
https://www.youtube.com/watch?v=LrSHpz6Eo5U

Lisbon:
https://www.youtube.com/watch?v=o8kOWpnUqQ8&t=29s

London:
https://www.youtube.com/watch?v=kWCDjsYAcm0

Lyon:
https://www.youtube.com/watch?v=ubdJ35NBrbE&feature=em-comments

Madrid:
https://www.youtube.com/watch?v=O3SMLcmdvQ8&feature=em-comments

Marseille:
https://www.youtube.com/watch?v=ypmFuBRkcKA

Metro Bilbao:
https://www.youtube.com/watch?v=9D1bdlyrilA&feature=em-comments

Milan:
https://www.youtube.com/watch?v=yJGeXKgwTUQ

Minsk:
https://www.youtube.com/watch?v=1tcK7IN4SpE&feature=em-comments

Moscow:
https://www.youtube.com/watch?v=zH6UBdj_nOk

Munich:
https://www.youtube.com/watch?v=g63c9Wl66-c&t=6s

Naples:
https://www.youtube.com/watch?v=KAZApBXljg4&feature=em-comments

Nizhny Novgorod:
https://www.youtube.com/watch?v=JdlS3ptszyg

Nuremberg:
https://www.youtube.com/watch?v=dPauKIOJP2g

Oslo:
https://www.youtube.com/watch?v=NuIzDT-82Ro

Paris:
https://www.youtube.com/watch?v=U_sttr3Qtgc&t=88s

Prague:
https://www.youtube.com/watch?v=uits1j4ZEuM&t=48s

Rennes:
https://www.youtube.com/watch?v=TpKtSMqzR0M&feature=em-comments

Rome:
https://www.youtube.com/watch?v=vy7C3ObuKRw

Rotterdam:
https://www.youtube.com/watch?v=3h-ibO8ZXng

Saint Petersburg:
https://www.youtube.com/watch?v=nqUIC4NxwHc&t=1s

Samara:
https://www.youtube.com/watch?v=xM4Hq9-yg4k&feature=em-comments

Sofia:
https://www.youtube.com/watch?v=Kq_XkeiKSI8

Stockholm:
https://www.youtube.com/watch?v=j5-NQMFUCwo

Toulouse:
https://www.youtube.com/watch?v=shMVxGInmaQ&feature=em-comments

Turin:
https://www.youtube.com/watch?v=Fab0mLzBxts&feature=em-comments

Newcastle:
https://www.youtube.com/watch?v=lv9TBoE7j7c

Vienna:
https://www.youtube.com/watch?v=sZNvdnjxn_c

Warsaw:
https://www.youtube.com/watch?v=5V3Ut7GSDfc&feature=em-comments
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Thank you for your support. Comment below so all of us can have a productive and insightful conversation about transportation!

Видео What is the Best Metro/Subway System in Europe? канала Timosha21