Hero-Fortress is the honorary title awarded to the Soviet Brest Fortress

Brest Fortress

Brest Fortress , formerly known as Brest-Litovsk Fortress , is a 19th century Russian fortress in Brest, Belarus. It is one of the most important Soviet World War II war monuments commemorating the Soviet resistance against the German invasion on June 22, 1941...

, now in Brest, Belarus

Brest, Belarus

Brest , formerly also Brest-on-the-Bug and Brest-Litovsk , is a city in Belarus at the border with Poland opposite the city of Terespol, where the Bug River and Mukhavets rivers meet...

 (then part of the Byelorussian SSR

Byelorussian SSR

The Byelorussian Soviet Socialist Republic was one of fifteen constituent republics of the Soviet Union. It was one of the four original founding members of the Soviet Union in 1922, together with the Ukrainian SSR, the Transcaucasian SFSR and the Russian Soviet Federative Socialist Republic...

) in 1965 for the defence of the frontier stronghold during the very first weeks of the German-Soviet War of 1941 to 1945.
The title Hero-Fortress corresponds to the title Hero City

Hero City

Hero City is a Soviet honorary title awarded for outstanding heroism during the German-Soviet War of 1941 to 1945. It was awarded to twelve cities of the Soviet Union. In addition the Brest Fortress was awarded an equivalent title of Hero-Fortress...

, that has been awarded to the total of twelve Soviet cities.