Daugavpils Fortress (Dinaburg Fortress)

Daugavpils Fortress (also Dinaburg Fortress, historically Dvinsk Fortress) is an early 19th‑century military fortification complex in Daugavpils, Latvia. Construction began by imperial decree in 1810 and — after delays related to the Napoleonic invasion and later work — is cited as completed in 1878. The complex is noted in architectural sources as a preserved example of its type in Northern Europe. Archival Cold War intelligence documents (declassified CIA reports from 1950–1951) record significant Soviet Army units stationed in the Daugavpils area and explicitly reference units 'at the fortress of Daugavpils,' confirming mid‑20th century military use. The provided historical sources do not document violent incidents tied to the site's reported supernatural lore. Contemporary paranormal and ghost‑tourism literature (a modern popular article compiled by Paul Dale Roberts with an informant) attributes several reported phenomena to the fortress, including audible voices and a confrontational admonition in Latvian, and an alleged physical contact incident involving a named former employee. These paranormal reports are anecdotal within the supplied materials and are not corroborated by the historical or archival sources provided.