Update sightseeing

index.md

@@ -52,7 +52,12 @@ Berlin is flat and therefore cycling is a popular option. Some hotels offer a bi
 
 ## Social events
 
-Social events like dinners and excursions will also be part of the program.
+There will dinners organised by Leonard on Monday, Tuesday and Friday night. Of course attendees
+are free to go for dinner in any group(s) they wish.
+
+If people are still in town on Saturday, there will be a longer trip, for example going to
+[Sancsoussi Gardens](https://www.spsg.de/en/palaces-gardens/object/sanssouci-palace) or
+a [sightseeing boat trip](https://www.sternundkreis.de/en/cruises/city-tour-from-friedrichstrasse-c8/).
 
 ## Partners