aerial view of zug old town with colorful houses, zugersee and rigi mountain, zug, switzerland, europe

alp alpine alps architecture attraction boat building cruise destination europe fort fortress french immensee lac lake landmark landscape lucerne luzern medieval mountain nature old palace people reflection restaurant rhone rigi riviera schloss shore sightseeing steamboat steamship swiss switzerland tourism tourist travel trees veytaux vierwaldstattersee water zug zugersee