Formally known as the House-Monument of the Bulgarian Communist Party, the monument at Buzludzha is like something out of a 1950s sci-fi movie. The saucer-shaped monument rises to a height of 107m, and was designed by the architect Georgi Stoilov. More than 60 Bulgarian artists collaborated on the design of murals for the site, and thousands of ‘volunteers’ were involved in the construction process,...