Mentioned here before, but there is also a tram tunnel (well, light rail*) next to it (new line opened just recently.) I work near it but I haven't took a peek

Mentioned here before, but there is also a tram tunnel (well, light rail*) next to it (new line opened just recently.) I work near it but I haven't took a peek in yet ... I need 30-45 minutes to walk through it :)