A reinforced concrete bunker located in central Bucharest, Romania, at the address Str. Smârdan 5. The structure is situated within a densely built urban area in Sector 3. Based on its construction style and location, it is likely a remnant of Romania's Cold War-era civil defense infrastructure, designed for protection against aerial attacks or as a shelter.
The exact historical purpose, date of construction, and current use are not confirmed by available sources. The bunker represents a common type of utilitarian military architecture found in many Eastern European cities from the mid-20th century. Its present condition and accessibility are unknown.