Pakruojis is a northern Lithuanian city situated on both banks of the Kruoja River, from which the city derives its name. The Pakruojis manor and town are first mentioned in written sources in 1531 when King Sigismund Vasa of the Polish-Lithuanian Commonwealth granted Pakruojis the privilege to organize two annual fairs.

In the Old Town, representing the historic city architecture, notable buildings include the 1801-built Jewish synagogue and the 1928-built unique architecture of the Firefighters' shed. The city's history is embodied by the 1887 historicist St. John the Baptist Church, brick and wooden residential houses, narrow streets, and the world's only monument composed of ram's horns – a Bookplate (exlibris). The Bookplate is created from ram's horns and is a unique symbol in the world.