Porta Nigra
Trier
The Porta Nigra is the best-preserved Roman city gate north of the Alps, and is on the UNESCO World Cultural Heritage list. A multimedia guide brings the history of the Porta Nigra to life, from its beginnings in antiquity to its use as a church. The content of the multimedia guide can be also be downloaded free of charge to your smartphone.
For further information, please visit http://www.zentrum-der-antike.de/en/monuments/the-porta-nigra/the-porta-nigra.html