St. Gereon's Basilica

Cologne has dozens of Romanesque churches. St Gereon is one of them, and I really liked the architecture, among other things, its high vaults, and its white exterior (white and neat carved facades have always fascinated me!). Built in the eleventh century, although there were traces of construction dating back to the fourth century. Became the Basilica Church in the twentieth century, by Pope's decision. Honestly one of the places worth visiting in this city.