The town on the Wieprz River, founded in 1476, has been a large trade center since the Jagiellonian times. Merchants from all over Europe came to fairs, and Łęczna became one of the most important towns of the voivodeship. Three markets have preserved until modern times remind of the fair traditions. In the 1960s, hard coal deposits were discovered near Łęczna, which started a new phase in the history of the city. In 1975, the construction of the mine in Bogdanka was commenced, and Łęczna became the capital of the new Lublin Coal Basin.

In Łęczna there is a Renaissance-baroque church of st. Mary Magdalene from the XVI-XVIII centuries with decorations in the type of the Lublin Renaissance. The Baroque Large Synagogue from the XVII century and the Small Synagogue from the early XIX century have also been preserved.

In Podzamcze district, one can visit the remains of a former farm, such as a stable, a cowshed, a hop drying room, and a farm building. The drying room was transformed into an observation tower. The picturesque ruins at the mouth of the Świnka River to the Wieprz River, along with the revitalized park, will surely appeal to the nature lovers and photography enthusiasts. The name of the district "Podzamcze" derives from the fact that a castle was once located nearby. The first mention of the Łęczna defensive building comes from a document dated 1525. However, currently there are no visible traces of the castle.

Ignacy Paderewski, a famous composer, himself visited Podzamcze in Łęczna. He visited the then owner of the goods with an intention to buy them, but eventually the transaction did not take place.

Going to the Park after dark, you have to be ready to meet ... the Black Sir, also known as the Mister Lithuanian. Local legends say that the mysterious figure has been seen for many generations. He appears as an elderly man in a top hat, a black cape, a cane in his hand, politely asks for directions to Lithuania and quickly disappears. No one has yet had time to answer him.

However, it's easier to meet dinosaurs in Podzamcze, than the Black Sir. The nearby Łęczna Dinosaurs Valley is the work of a local artist, Bogumił Brodzisz.

The Wieprz River Valley in this area is under protection in the form of the Nadwieprzański Landscape Park.