Kaunas sits at the confluence of the Nemunas and Neris rivers in central Lithuania, 100 kilometers west of Vilnius. With a population of approximately 289,000 as of 2023, it ranks as Lithuania's second-largest city. Between 1920 and 1939, Kaunas served as the provisional capital of Lithuania after Poland occupied Vilnius following World War I. This interwar period left the city with a concentration of modernist architecture that now forms the basis for its UNESCO World Heritage designation, awarded in 2023 as part of a transnational serial nomination covering European modernist architecture.
The Old Town of Kaunas occupies the peninsula where the two rivers meet. Kaunas Castle, built in the mid-14th century during the reign of Grand Duke Algirdas, remains the oldest stone castle in Lithuania, though only portions of the original walls and towers survive after repeated destruction by the Teutonic Knights. The Town Hall, constructed in the 16th century and modified through the 18th century, stands in Town Hall Square with its 53-meter white tower. Locals call it the White Swan. The Gothic House of Perkūnas, built around 1440 and likely used by Hanseatic merchants, takes its name from the Lithuanian thunder god after archaeologists in the 19th century misidentified it as a pagan temple site.
Kaunas Cathedral Basilica, originally built as a Gothic church in the early 15th century, underwent extensive baroque reconstruction in the 17th century after fire damage. The interior measures 84 meters in length, making it one of Lithuania's largest churches. The adjacent Kaunas Castle Museum operates in a merchant house from the 16th century. The Church of St. George and Bernardine Monastery complex, founded in 1469, preserves late Gothic architectural elements despite modifications during the baroque period. The Church of Vytautas, commissioned by Grand Duke Vytautas in 1400 according to traditional accounts, served various functions including Orthodox, Catholic, and during the Russian Empire period, storage.
Laisvės alėja, or Liberty Avenue, runs 1.7 kilometers through the city center as a pedestrian boulevard. The street developed in the late 19th century during the Russian Empire period. After Kaunas became the provisional capital in 1920, the Lithuanian government commissioned numerous modernist buildings along and near this avenue. The Officers' Club, completed in 1937 by architect Vytautas Landsbergis-Žemkalnis, demonstrates rationalist modernism with its clean horizontal lines. The Central Post Office, finished in 1932 and designed by Feliksas Vizbaras, features stripped classicism with modernist elements. The Pienocentras building from 1934, designed by Stasys Kudokas, housed Lithuania's national dairy cooperative and shows functionalist architecture with curved corners.
The Žaliakalnis Funicular Railway has operated since 1931, climbing 142 meters over a 140-meter track length at a gradient of approximately 18 degrees. The journey takes slightly over one minute. At the top sits the Christ's Resurrection Basilica, construction of which began in 1932 to designs by architects Karolis Reisonas and Vytautas Landsbergis-Žemkalnis. The Soviet occupation halted construction in 1940, and the unfinished building served as a radio factory until Lithuanian independence. Completion occurred between 2004 and 2017. The observation deck at 70 meters offers views across the city to the river confluence. The Žaliakalnis neighborhood contains numerous examples of interwar villa architecture, with houses built for government officials, military officers, and the professional class between 1920 and 1940.
The Ninth Fort stands four kilometers northwest of the city center. Russian authorities constructed this fortification between 1902 and 1913 as part of the Kaunas Fortress complex defending the western border of the Russian Empire. During the interwar period, it functioned as a prison. Nazi forces used the fort as a killing site between 1941 and 1944, murdering approximately 50,000 people, predominantly Jews from Kaunas and other European countries. The museum, established in 1958 during the Soviet period, documents both Nazi and Soviet occupations. The 32-meter concrete memorial sculpture by Alfonsas Vincentas Ambraziūnas was erected in 1984.
Pažaislis Monastery occupies a peninsula in the Kaunas Reservoir, approximately 10 kilometers east of the city center. Christopher Sigismund Pac, Grand Chancellor of Lithuania, commissioned the monastery and Church of the Visitation in 1662. Italian architects Pietro Putini, Giovanni Battista Frediani, and later Carlo Puttini worked on the complex, completing the church in 1674. The church represents one of the finest examples of Italian baroque architecture in Northern Europe. The interior contains frescoes by Michelangelo Palloni. The Tsarist authorities closed the monastery in 1832 after the November Uprising. Soviet authorities converted it to an archive, sanatorium, and art gallery. Camaldolese monks returned in 1992. The monastery hosts the annual Pažaislis Music Festival, established in 1996, which runs from late May through August.
The M. K. Čiurlionis National Art Museum, founded in 1921, holds the world's largest collection of works by composer and painter Mikalojus Konstantinas Čiurlionis (1875-1911). The collection includes approximately 340 paintings and numerous musical compositions. The main building on Putvinskio Street occupies the former Vilnius Land Bank building from 1912. Čiurlionis developed a distinctive symbolist style attempting to translate musical structures into visual form, evident in his cycles "Sonata of the Sun" and "Sonata of the Sea." He died at age 35 in a sanatorium near Warsaw. The museum also maintains collections of Lithuanian folk art, applied arts, and works by other Lithuanian artists from the 20th century.
The Devils' Museum (Velnių muziejus) contains over 3,000 devil representations from 70 countries. Artist Antanas Žmuidzinavičius began the collection in 1906, donating it to the state in 1966. The museum occupies his former residence on V. Putvinskio Street. The collection includes ceramic, wooden, and textile devils, ranging from folk art to contemporary sculpture. Some pieces carry political commentary—a notable work from 1972 shows Hitler and Stalin dancing over Lithuania.
Kaunas Botanical Garden, established in 1923 by Vilnius University and transferred to Vytautas Magnus University in 1940, covers 62.5 hectares in the Freda district. The garden maintains approximately 10,000 plant species. The greenhouse complex, built in stages beginning in the 1920s, covers approximately 2,000 square meters. The arboretum contains tree species from North America, East Asia, and Europe. The garden functions as both a public park and research facility.
The Central Market Hall opened in 1930 to designs by architect Mykolas Songaila. The building demonstrates functionalist modernism with large windows providing natural light to the trading floor. The interior spans approximately 2,000 square meters under a reinforced concrete structure. Vendors sell produce, meat, fish, dairy products, and prepared foods. The market operates daily except Mondays.
Kaunas Archaeological Museum, established in 1979, focuses on Lithuanian prehistory and early history. The collection includes artifacts from the Paleolithic through medieval periods. The exhibition covers hunter-gatherer societies, the adoption of agriculture, bronze working, and the formation of Baltic tribal structures. The museum occupies a former merchant house in the Old Town.
The Kaunas City Museum operates in the former Town Hall. The exhibition traces urban development from the city's founding in the 13th century through the Soviet period. Displays include artifacts from merchant guilds, craftsmen's tools, photographs documenting interwar Kaunas, and materials relating to Soviet and Nazi occupations.