Where in the World?

Clue #4

We are going somewhere...

that has been a popular tourist destination,

especially among the Germans and Brits, since the 1950's.

But most Americans have never heard of it.

Alrighty, GLH, have a go!


Previous Clues:
...that has water sports for GLH and a fascinating history for me.
...that was once part of the Roman Empire.
...with a long religious history.