Wiener Tor in Hainburg an der Donau, Medieval fortification gate and museum in Hainburg an der Donau, Austria

The Wiener Tor is a medieval fortified gate in Hainburg an der Donau with two distinct architectural phases still visible today. The lower section functions as a defensive tower built from stone blocks, while the upper level shows a later Gothic expansion that was added to increase its height.

The Wienertor goes back to two major 13th-century building phases: a double-tower gate set in a forecourt (Zwinger) before the town wall, dated around 1225/65, possibly begun under Duke Leopold VI. Its type, battered plinth, portcullises and oversized arrow slits follow French fortification models. The early Gothic upper storeys were added in the second half of the 13th century, probably by King Ottokar around 1265; a beam was felled in winter 1265/66.

The gate reflects multiple craftsmanship traditions visible in its construction marks and architectural details that visitors can observe directly. The displayed items from local guilds and trades tell how people worked and lived in this town over centuries.

The gate stands on the western edge of Hainburg's old town, where the road toward Vienna leaves the walled centre, and is reached on foot from the main square. The passage is paved and level, but the upper floors are reached only by stairs, and the medieval steps and thresholds are uneven. The gate can be viewed from outside at any time.

Two early Gothic knight sculptures were cut into the bossed stonework above the gateway, probably around 1260/90. Their position in the building is unexplained, and the long-arched embrasures on the field side were never fitted for actual use.