switzerland national flag at cruise boat`s rear end with beautiful summer view of swiss natural alps, lake and blue sky background

activities alpine alps and attraction background beautiful bern blue boat boats brienz clear color cross cruise day destination end flag flutter holiday interlaken interlakenoberhasil jungfrau lake lauternrunnen mount national natural nature oberland outdoor patriot rear red scene scenic sky spiez summer sunny swiss switzerland symbol thun tourism tourist transport travel trip turquoise vacation view water weekend