Lettország

Riga was a major centre of the Hanseatic League, deriving its prosperity in the 13th–15th centuries from the trade with central and eastern Europe. The urban fabric of its medieval centre reflects this prosperity, though most of the earliest buildings were destroyed by fire or war. Riga became an important economic centre in the 19th century, when the suburbs surrounding the medieval town were laid out, first with imposing wooden buildings in neoclassical style and then in Jugendstil . It is generally recognized that Riga has the finest collection of art nouveau buildings in Europe.

The Struve Arc is a chain of survey triangulations stretching from Hammerfest in Norway to the Black Sea, through 10 countries and over 2,820 km. These are points of a survey, carried out between 1816 and 1855 by the astronomer Friedrich Georg Wilhelm Struve, which represented the first accurate measuring of a long segment of a meridian. This helped to establish the exact size and shape of the planet and marked an important step in the development of earth sciences and topographic mapping. It is an extraordinary example of scientific collaboration among scientists from different countries, and of collaboration between monarchs for a scientific cause. The original arc consisted of 258 main triangles with 265 main station points. The listed site includes 34 of the original station points, with different markings, i.e. a drilled hole in rock, iron cross, cairns, or built obelisks.

Located in the western part of Latvia, the town of Kuldīga is an exceptionally well-preserved example of a traditional urban settlement, which developed from a small medieval hamlet into an important administrative centre of the Duchy of Courland and Semigallia between the 16th and 18th centuries. The town structure of Kuldīga has largely retained the street layout of that period, and includes traditional log architecture as well as foreign-influenced styles that illustrate the rich exchange between local and travelling craftspeople from around the Baltic Sea. The architectural influences and craftsmanship traditions introduced during the period of the Duchy endured well into the 19th century.