luzern skyline and musegg wall museggmauer with nolli tower nolliturm and mannli tower mannliturm - lucerne, switzerland

architecture attraction building canton city cityscape defensive destination europe famous fort fortification hill historic lake landmark little lli lucerne luzern man mannli mannliturm medieval musegg museggmauer napara noelliturm nolli nolliturm old reuss river round skyline stone swiss switzerland tourism tower towers town travel urban view wall