Another of Europe's picture-perfect destinations, Lake Blausee, sits like a sparkling jewel in the heart of Switzerland's Bernese Oberland, around 25 miles from Interlaken. One of the best-known ...

So seriously, in fact, that the entry fee also includes a 15-minute ride on a glass-bottomed boat on Lake Blausee (or Blue Lake in English) so you can see all the way to the lake floor and spot ...