Simeonstift of Trier

The foundation of St. Simeon's Collegiate Church took place after 1035, named after the Greek monk Simeon of Trier. He had settled as a hermit in the Porta Nigra after 1028 and was canonized after his death in 1035. In his honor, the collegiate church was built, and the Roman city gate was converted into a double church. Although no founding charter has survived, the establishment of the collegiate church is presumed to have occurred shortly after Simeon's canonization. Dendrochronological findings date the north wing of the collegiate church enclosure to 1040, and a document from 1048 attests to the existence of a provost, indicating an established collegiate constitution. In 1098, Emperor Henry IV confirmed the extensive possessions of St. Simeon's Collegiate Church. The conversion of the Porta Nigra into a church was reversed in 1804 by order of Napoleon, largely restoring the gate to its ancient state. The collegiate church itself was dissolved in 1802.

The Collegiate Church of St. Simeon is located in Trier, a city in Rhineland-Palatinate, Germany. It stands at an elevation of approximately 136 m above sea level, in the immediate vicinity of the Roman city gate Porta Nigra.

The former buildings of the collegiate church now house the Simeonstift City Museum Trier. The Romanesque east choir is still visible from the outside as a testament to its former use as a church.

• Trier Cathedral (Sacred building, approx. 387 m away)
• Palais Kesselstatt (Trier) (Residence, approx. 480 m away)
• Reichsabtei St. Maximin (Trier) Monastery (Sacred building, approx. 607 m away)
• Roman Imperial Throne Room (Basilica of Constantine) (Trier) (Ancient buildings, approx. 689 m away)