Radio and TV Museum, also known as Mastola, is a museum located in Lahti, Finland. The museum is near the city centre on the Radiomäki hill (literally translated to Radio Hill). Next to the museum building are two 150-meter-high radio masts built in 1927. The masts are a well-known landmark and a symbol of the city. The museum operates in a radio station building designed by a Finnish architect Kaarlo Könönen and built in 1935. The Radio and TV Museum was opened in 1993. The museum went through an extensive renovation between the years 2014–2016 and reopened in 2017.