It is a traditional spa town. The story of its past is told by its heritage such as the ruins of the 13th-century Rádpuszta church, the late-Baroque St Donatus chapel, the mansions and manors. Among its natural treasures the park of the Szalay Manor (udvarház) and the fishpond system of Irma Puszta are noteworthy.
The area has been inhabited since the Neolithic Age and archaeological finds from the Copper Age, from Roman times and the Migration period bear witness to the every-day life of the past. The settlement's name evokes the times of ancient Hungarians; it is probable that the area served as a meeting place for bands of Magyars on their adventurous ways towards Western Europe.In 1978 state authorities unified Balatonboglár and Balatonlelle, now called Boglárlelle, which was granted city status in 1986. Following the change of political system, the two settlements were once again recognised as separate.
The turning of the 19th century and the dawn of spa life brought about major changes to the settlement which can be felt to this day. Balatonlelle was granted holiday resort status in 1913 and the building of larger holiday homes started from 1926. From then on the number of visitors from abroad grew continuously and therefore accommodations, restaurants and pubs were established. A spa casino was built which also serves as a sporting and cultural venue.