St. John XXIII (Cologne-Chorweiler)

The church's original name, St. Johannes in der Neuen Stadt, linked the new Jerusalem of the Book of Revelation with its location in the "New Town" of Chorweiler. For reasons that remain unclear, the church stood unconsecrated for 28 years after Cardinal Höffner had to cancel the planned consecration in 1981. The congregation had long wished to be named after Pope John XXIII, but could only pursue this after his beatification in 2000. In 2009, Cardinal Meisner finally carried out the consecration, and the church has borne the pope's name ever since — as St. John XXIII since 2014.

Three of the brick exterior walls are windowless, while ribbons of windows run along the top edge and drop vertically down two of the polygon's corners. A round brick tower with a flat top is attached to the building. Inside, clear glass windows let in plenty of light; the concrete roof structure dips down at the entrance and rises toward the altar. The tall, windowless altar wall holds only a cross, with a sandstone altar table standing before it.

The cross was designed by Elisabeth Hoffmann-Lachner as a mosaic of various natural stones; she also created the altar table, candlesticks, and tabernacle pedestal. The vertical window ribbons were made by Irish artist Jim O'Daly as stained-glass windows using opal glass in shades of blue, red, and yellow, illustrating chapters 21 and 22 of the Book of Revelation.

The church has no bells of its own. It was only at the end of 2016 that it gained an organ and a carillon: the slider-chest organ came as a gift from St. Anna's Church in Düsseldorf-Niederkassel, which was deconsecrated that same year. The carillon, made in Gerhard Kern's workshop in Kerpen-Buir, was installed in wall niches above the tabernacle.