Which county's flag is the only square flag in the world?
Flag of Switzerland squares until 1889, when its dimensions were officially set. The civil and state ensign of Switzerland, used by Swiss ships, boats and non-governmental bodies, is rectangular in shape and has the more common proportions of 3:2. The Swiss flag is one of only two square sovereign-state flags, the other being the flag of Vatican City. The emblem of the Red Cross is the Swiss flag with switched colours. According to the 2017 flag law (SR 232.21), "The Swiss flag shows a Swiss cross on a square background". Special provisions are made for the naval ensign and for civil aircraft identification.
National Flag Square 2017, the Flag Post is dismounted and the National Flag Square closed from public access with fences. President of Azerbaijan Ilham Aliyev laid the foundation stone for National Flag Square near the naval base in Baku's Bayil settlement on 30 December 2007. The project was developed by the US firm, Trident Support, and executed by Azerbaijan’s Azenko company. The opening of the National Flag Square took place on 1 September 2010. At the President's initiative, the National Flag Museum was also established and 9 November was declared the National Flag Day. Baku Boulevard was extended to the National Flag Square