Triumphal Arch of Vác, Late-Baroque triumphal arch in Vác, Hungary.

The Triumphal Arch of Vác is a late-Baroque monument standing about 20 meters high with ornately detailed reliefs on both sides. The structure combines classical arches and columns with elaborately decorated depictions of royal figures.

Bishop Migazzi commissioned architect Isidore Canevale in 1764 to design and build this monument as a tribute to Empress Maria Theresa's visit. Construction was completed in less than six months.

Locals call it Kőkapu, the Stone Gate. The Latin inscription AETERNAE DOMVI on the city-facing side means "to the eternal house", referring to the perpetuity of the ruling house. The longer northern inscription names Bishop Migazzi and the year 1764, and beside it hang the portraits of Maria Theresa and Emperor Francis.

The arch stands on Dózsa György út, an 8–10 minute walk north from Március 15 tér, the city's main square. The street is narrow and the gate spans almost its full width, so traffic splits before it: only one vehicle fits under the arch, and the opposite lane passes beside it. The Vác prison stands next door, recognizable by its massive block and barbed-wire fence.

Legend holds that the arch was raised in two weeks, so Maria Theresa dared not drive her carriage beneath it; weeks later, seeing it still standing, she crossed without fear. In fact, from the laying of the foundation stone on 2 March 1764 to completion on 20 August 1764, six months passed.