First Mayor of Hamburg, Peter Tschentscher (2L), Britain's King Charles III (centre right) and German President Frank-Walter Steinmeier (C) tour the harbour in Hamburg, Germany on March 31, 2023. - Britain's Royal Couple is on a three-day tour in Germany for Charles' first state visit as king, with the trip billed as "an important European gesture" to maintain strong ties after Brexit. (Photo by PHIL NOBLE / POOL / AFP)