The funds for the construction of the parish church were collected immediately after the creation of the Walferdange parish in 1843.
Construction work started in 1845 and lasted until 1848. The drawings are signed by the "architecte provincial" Eberhard. The neoclassical style building was dedicated to the Holy Trinity. St. George is secondary patron. The church was consecrated on July 3, 1867, by the apostolic vicar Nicolas Adames.
The former St.George's chapel (rue Josy Welter) was the first sanctuary at Walferdange. We do not know when it was built. It is first documented in 1570. A written source from 1685 indicates that it had meanwhile been consecrated to the Holy Trinity. As of 1713, a priest served at Walferdange. The chapel was thoroughly renovated in 1750. A report describes the chapel as necessary, because Walferdange is situated at 3/4 of an hour's walk from the Steinsel parish church and the road was hardly practicable due to the frequent floods of the Alzette River. The chapel's gable is still visible today in the eastern wall of the "Centre Princesse Amélie" (former school).
The latest renovation of the church dates back to 2011. During these works, the orginial wall paintings created by Gerhard Lamers in 1903, which had been painted over during the liturgical reform of 1968, were completely uncovered.
