Guaiacum uses, including as lumber, for medicinal purposes, and as ornamentals. The trade of all species of "Guaiacum" is controlled under CITES Appendix II. "Guaiacum officinale" is the national flower of Jamaica, while "Guaiacum sanctum" is the national tree of the Bahamas. The genus is famous as the supplier of lignum vitae, which is the heartwood of several species in the genus. It is the fourth-hardest variety of wood as measured by the Janka hardness test, requiring a force of to embed a steel ball in diameter half that distance into the wood. The Spanish encountered guaiacum wood when they conquered
Janka Kupala National Theatre donations of citizens. In 1944 has been renamed in honour of classic of the Belarusian literature, poet Janka Kupala. Janka Kupala National Theatre Janka Kupala National Theatre (, Minsk) is the oldest theatre of Belarus. Also, the theatre is an object of cultural heritage of Belarus. The building of the theatre was built in 1890 by the project of architects Konstantin Vvedenski and Korol' Kozlovskiy. The main facade looks out onto the square formed by the intersection of Karl Marx and Engel'sa Street. The theatre was opened on September 14, 1920, and it is located in a building of the