Vilnius, Lithuania’s capital, is known for its baroque architecture, seen especially in its medieval old town. But the buildings lining this district’s partially cobblestoned streets reflect diverse styles and eras, from the neoclassical Vilnius Cathedral to Gothic St. Anne's Church. The 16th-century Gate of Dawn, containing a shrine with a sacred Virgin Mary icon, once guarded an entrance to the original city. Vilnius is classified as a Gamma global city according to GaWC studies, and is known for the architecture in its Old Town, declared a UNESCO World Heritage Site in 1994. The average annual temperature is 6.1 °C (43 °F); in January the average temperature is −4.9 °C (23 °F), in July it is 17.0 °C (63 °F). The average precipitation is about 661 millimetres (26.02 in) per year.