Fort Legionów, Military fort in Śródmieście, Warsaw, Poland.

Fort Legionów is a three-storey artillery tower built in 1851–1853 on an irregular brick cylinder plan, surrounded by a dry moat. Its curved red-brick wall has five tall arched windows with pale sills and small dark openings below, and a dark metal coping runs along the top. The tower was closed on the north-west by a gate with a drawbridge.

Built in 1851–1853 as part of the ring of fortifications around the Warsaw Citadel, the fort was named Włodzimierz (Vladimir) after a Russian grand duke. After 1865 it was modernised: the eastern moat was filled in, an L-shaped earth-and-brick battery was added toward the Vistula, and a southern and western rampart was raised. It was renamed Fort Legionów in 1921.

The fort was named Włodzimierz (Vladimir) during the Russian partition, after Grand Duke Vladimir, not a tsar. In 1921 it was officially renamed Fort Legionów. Since 2000 the building has housed the Forteca restaurant and is rented for concerts and weddings; guided tours include part of the underground corridors.

The fort can be reached from Zakroczymska Street in the Śródmieście area and is visible from the eastern Vistula riverbank. It is easier to visit during warmer months when outdoor sections are fully accessible.

The grounds contain a network of underground tunnels and chambers that once connected different defensive positions. These passages reveal the engineering complexity needed to create an operational fortress of this scale.