![Kieran Drake on Twitter: "There's a lot written about the walls that divided #Berlin, but much less about the boundaries formed by water. Today I swam 2km criss-crossing Groß Glienicker See. It's Kieran Drake on Twitter: "There's a lot written about the walls that divided #Berlin, but much less about the boundaries formed by water. Today I swam 2km criss-crossing Groß Glienicker See. It's](https://pbs.twimg.com/media/FbW1ri0WIAAsuOO.jpg)
Kieran Drake on Twitter: "There's a lot written about the walls that divided #Berlin, but much less about the boundaries formed by water. Today I swam 2km criss-crossing Groß Glienicker See. It's
![Beach, Tegeler See, Tegel, Reinickendorf, Berlin, Germany, Strandbad, Deutschland Stock Photo - Alamy Beach, Tegeler See, Tegel, Reinickendorf, Berlin, Germany, Strandbad, Deutschland Stock Photo - Alamy](https://c8.alamy.com/zooms/9/3d240f6ed61e4286b247aaa0c90895ef/2b75529.jpg)
Beach, Tegeler See, Tegel, Reinickendorf, Berlin, Germany, Strandbad, Deutschland Stock Photo - Alamy
![Beach, Tegeler See, Tegel, Reinickendorf, Berlin, Germany, Strandbad, Deutschland Stock Photo - Alamy Beach, Tegeler See, Tegel, Reinickendorf, Berlin, Germany, Strandbad, Deutschland Stock Photo - Alamy](https://l450v.alamy.com/450v/t17prh/berlin-germany-beach-on-lake-tegel-strandbad-tegeler-see-reinickendorf-t17prh.jpg)