The roman temple can be visited
Roman Temple Tawern

The Roman Temple District of Tawern is located on the Metzenberg near Tawern. This collection of temple buildings once served as a sanctuary.
History+
Originally, the district, enclosed by an irregular quadrangular wall, presumably comprised five temples, their facades facing the valley. Four ancillary buildings and two gate complexes were added. One temple was replaced by a new one, while three others had to make way for a larger structure with a three-sided ambulatory. This larger temple housed a larger-than-life statue of the god Mercurius. Travelers on the Roman road from Metz to Trier offered sacrifices here to the god of trade, commerce, and transport. The complex was likely destroyed by Christians no later than 392 AD, with the prohibition of pagan cults.
Source: Wikipedia · Licence: CC BY-SA 4.0
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 49.6642, 6.5098