The Buzludzha Monument was constructed in 1981 to commemorate the founding of the Bulgarian Socialist movement nearly a century before, but it now stands as a symbol of its failure. The Buzludzha Monument was constructed in 1981 to commemorate the founding of the Bulgarian Socialist movement nearly a century before, but it now stands as a symbol of its failure. The Buzludzha Monument was constructed in 1981 to commemorate the founding of the Bulgarian Socialist movement nearly a century before, but it now stands as a symbol of its failure. The Buzludzha Monument was constructed in 1981 to commemorate the founding of the Bulgarian Socialist movement nearly a century before, but it now stands as a symbol of its failure.