We have been to Miniatur Wunderland many times and we also have some nice videos on the layout. However Miniatur Wunderland is no longer a Marklin layout, all the Marklin track was replaced with 2-Rail DC track. The 3-Rail Marklin track did not hold up because they run there trains 12 hours a day. The Marklin AC pickup shoes wore out all the track. Now it is a DC Roco, Fleischmann, Bemo, Brawa and Hag layout.