St. Gertrude's Cathedral

St. Gertrude's Cathedral in Utrecht, the Netherlands, is the seat of the Archbishop of Utrecht and the mother church of the Old Catholic Church of the Netherlands.

It is located at Willemsplantsoen, at the edge of the city centre. The current church building was constructed between 1912 and 1914, and was designed by E.G. Wentinck in Neo-Romanesque style, echoing St. Mary's Church, which formerly stood on the Mariaplaats, very close by.

In the altar there are more than 1700 relics in hundreds of containers. Underneath these relics there is supposed to be a piece of a rib of St. Willibrord.