The Gate of Trajan or Trajan's Gate (Bulgarian: Траянови врата, Trayanovi vrata) is a historic mountain pass near Ihtiman, Bulgaria. It was named so after Roman EmperorTrajan, on whose order a fortress by the name of Stipon was constructed on the hill over the pass, as a symbolic border between the provinces of Thrace and Macedonia.
Today, a tunnel of Trakiya motorway similarly known as the Gate of Trajan Tunnel (тунел „Траянови врата“) is located just near the fortress, 55 km from Sofia.