Passau (German: [ˈpasaʊ] ⓘ; Central Bavarian: Båssa(u)) is a city in Lower Bavaria, Germany.

[4] In the 2nd century BC, many of the Boii tribe were pushed north across the Alps out of northern Italy by the Romans.

They established a new capital called Boiodurum by the Romans (from Gaulish Boioduron), now within the Innstadt district of Passau.

The Batavi were an ancient Germanic tribe from area of the Rhine delta who frequently served in the Roman army as auxiliary troops.

[7] In the Treaty of Passau (1552), Archduke Ferdinand I, representing Emperor Charles V, secured the agreement of the Protestant princes to submit the religious question to a diet.

During the Renaissance and early modern period, Passau was one of the most prolific centres of sword and bladed weapon manufacture in Germany (after Solingen).

[8] As a result, the whole practice of placing magical charms on swords to protect the wearers came to be known for a time as "Passau art".

[15] On 3 May 1945 a message from Major General Stanley Eric Reinhart’s 261st Infantry Regiment stated at 3:15 am: "AMG Officer has unconditional surrender of PASSAU signed by Burgermeister, Chief of Police and Lt. Col of Med Corps there.

Tourism in Passau focuses mainly on the three rivers, the St. Stephen's Cathedral (German: Der Passauer Stephansdom) and the "Old City" (Die Altstadt).

Due to its location on the German–Austrian border, and in the south-east of the country, Passau has become a major migrant entry point into Germany.

In 2015 the BBC reported that traffickers drive migrants and refugees through Austria and leave them on the side of the autobahn.

This situation has caused the government of Passau to divert funds from flood prevention to housing and feeding the refugees and migrants, around 10% of whom are unaccompanied children.