Lyre is a major city on Cassel (Goss II), United Empire of Earth (UEE) that became a tourism center after Cassel was declared a natural wonder in 2624. The city suffered a significant economic downturn in the mid 2600s due to Livia Messer III's heavy travel restrictions. In the 2800s, restoration work began in Lyre when the inhabitants of the Goss system pooled their resources to revitalize Cassel. Its crystalline buildings, erected during the city's boom years, are among its most popular attractions.