Obama will travel to Germany for the launch of a summer of celebratory events organised by the Protestant church to mark its 500th anniversary.

Whether intentional or not, the simultaneous presence of both men on the same continent will serve to underline the difficulty many Europeans have had in dealing with the concept of Trump as US president, and the great deal of nostalgia that exists for the Obama era.

Obama is due to hold a speech in Berlin and to take part in a live discussion with the German chancellor, Angela Merkel, titled "Actively shaping democracy – taking responsibility at home and abroad". They will talk on a purpose-built stage in front of Berlin's most prominent landmark, the Brandenburg Gate.

Obama's trip follows his acceptance of an invitation sent last May by the bishop of Bavaria Heinrich Bedford-Strohm. More details about the visit are due to be released at a press conference on Wednesday.