It would be a lie to tell you only locals know this place. But this is something you shouldn't miss just because 'mass-tourists' go there too. For me the symbolism and the environment are the main reasons, because it's not a usual memorial, and it's on the bank of the Danube which allows you to sit there and live through what it represents.
This very unusual 'sculpture' was erected in 2005 to honour the Jews shot into the Danube by facist Arros Cross during World War II. There are 60 pairs of shoes - both adult and child size. If you like to spend time with thinking about history and people's stories you should go and check. It will definitely make you think.