Tiefbunker Kennedybrücke, Civil defense bunker in Rotherbaum, Germany

Tiefbunker Kennedybrücke is a civil defence structure of three connected shelters set between the Kennedy and Lombards bridges in Hamburg. It was built as a replacement for the wartime Vier-Röhren-Schutzraum Ferdinandstor and handed to the Eimsbüttel district office in 1963. Inside are 134 seats and 69 beds for about 200 people, with mains power, water and sewage connections but no emergency generator and no wells of its own.

The Tiefbunker Kennedybrücke was built as a replacement for the wartime Vier-Röhren-Schutzraum Ferdinandstor, a four-tube shelter that stood beneath today's Kubus (Galerie der Gegenwart) of the Kunsthalle Hamburg. That old tube bunker was demolished in the early 1960s, and the new deep bunker was handed over to the Eimsbüttel district office in 1963.

The bunker's three shelters were handed to the Eimsbüttel district office in 1963, so the site belongs to the city's civil-defence administration rather than to the Kunsthalle above. Its 134 seats and 69 beds were planned for about 200 people, a figure that shows how shelters were sized for short stays. The site is a replacement for the wartime Ferdinandstor tube shelter, which stood under today's Kunsthalle cube.

The three shelters lie between the Kennedy and Lombards bridges, and the site is connected to the municipal power, water and sewage networks. It has no emergency power supply and no wells of its own, so it depends on intact infrastructure outside. The 134 seats and 69 beds are sized for about 200 people.

The facility has an unusual mix of rectangular and circular chambers hidden beneath the nearby park. This concealed structure shows how postwar construction often existed invisibly beneath busy urban spaces.