Leszna Górna

(Polish: , German: Ober Lischna) is a village in Frýdek-Místek District, Moravian-Silesian Region, Czech Republic. It was a separate municipality but became administratively a part of Třinec in 1960. It lies on the border with Poland, in the historical region of Cieszyn Silesia and has a population of 311 (1 January 2008).Until the 1920 division of Cieszyn Silesia between Poland and Czechoslovakia it was a part of the village of Leszna Górna, which now lies in Poland.

Dzięgielów is a village in Gmina Goleszów, Cieszyn County, Silesian Voivodeship, southern Poland, near the border with the Czech Republic. It lies in the Silesian Foothills and in the historical region of Cieszyn Silesia. Dzięgielów is one of the most Protestant municipalities of the region. Centre for mission and evangelization of the Evangelical-Augsburg Church is located here. Every year evangelization week occurs on the football field.

(Polish: ) is a village in Frýdek-Místek District, Moravian-Silesian Region, Czech Republic, on the border with Poland. It was a separate municipality but became administratively a part of Třinec (Trzyniec) in 1960. It lies in the historical region of Cieszyn Silesia and has a population of 287 (1 January 2008).The name is patronymic in origin derived from personal name Kojek.

Vendryně (Polish: ) is a municipality and village in Frýdek-Místek District in the Moravian-Silesian Region of the Czech Republic. It has about 4,500 inhabitants. It lies in the historical region of Cieszyn Silesia on the banks of the Olza River. The municipality has a significant Polish minority.

(Polish: , German: Nieder Lischna) is a village in Frýdek-Místek District, Moravian-Silesian Region, Czech Republic. It was a separate municipality but became administratively a part of Třinec in 1946. It has a population of 4,600 (1 January 2008).It lies in the Silesian Foothills and in the historical region of Cieszyn Silesia.

Bażanowice (/baʐanɔvit͡sɛ/) is a village in Gmina Goleszów, Cieszyn County, Silesian Voivodeship, southern Poland, close to the border with the Czech Republic. It lies in the Silesian Foothills in the historical region of Cieszyn Silesia. The name is patronymic in origin derived from personal name Bażan.

Gmina Goleszów is a rural gmina (administrative district) in Cieszyn County, Silesian Voivodeship, in southern Poland, in the historical region of Cieszyn Silesia. Its seat is the village of Goleszów. The gmina covers an area of 65.89 square kilometres (25.4 sq mi), and as of 2019 its total population is 13,160.

Goleszów [ɡɔˈlɛʂuf] is a village and the seat of Gmina Goleszów (an administrative district) in Cieszyn County in Silesian Voivodeship, southern Poland. The name of the village is possessive in origin, derived from a personal name Golesz.

Třinec (Czech: [ˈtr̝̊ɪnɛts] ; Polish: Trzyniec [ˈtʂɨɲɛt͡s] ; German: Trzynietz) is a city in Frýdek-Místek District in the Moravian-Silesian Region of the Czech Republic. It has about 34,000 inhabitants and is the least populated statutory city in the country. The city is an important cultural centre of the Polish minority in Trans-Olza, which makes up 12.1% of the population (as of 2021).Třinec is notable for the Třinec Iron and Steel Works steel plant, the largest in the country, which still has a major impact on the city, its character, demographics, and air quality.

(Polish: , German: Lischbitz) is a part of the town of Třinec in Frýdek-Místek District, Moravian-Silesian Region, Czech Republic, on the Olza River. It was a separate municipality but later became administratively a part of the town of Třinec. It lies in the historical region of Cieszyn Silesia and has a population of 17,239 (1 January 2008).The name is of patronymic origins derived from personal name *Łyżba.

Staré Město (Polish: Stare Miasto, "Old Town") is administratively a part of the town of Třinec in Frýdek-Místek District, Moravian-Silesian Region, Czech Republic. It is the historical centre of the town. It lies in the historical region of Cieszyn Silesia and has a population of 5,713 (1 January 2008).Staré Město is a place where the main urban settlement grew alongside Třinec Iron and Steel Works from the 19th century up to World War II. In 1946 merged with the town was the village of Lyžbice where in the 1950s the ruling Communist Party of Czechoslovakia began a large scale development in the style of socialist realism. Afterwards Lyžbice became a new downtown, overtaking the role from Staré Město (lit. Old Town).

Cisownica is a village in Gmina Goleszów, Cieszyn County, Silesian Voivodeship, southern Poland, close to the border with the Czech Republic. In 2008 it had a population of 1,705. It lies in the historical region of Cieszyn Silesia on the slopes of Mała Czantoria mountain. The name of the village is derived from the taxus trees ("cis" in Polish) which grew here in the past in large numbers. Cisownica in recent years has become a popular tourist destination, due to its vicinity to the Silesian Beskids mountain range.