Latvia, Kuldiga and Venta waterfall

Kuldiga, a historic town in Latvia, was a capital of the Duchy of Korland. Known for its unique architecture, it features Saint Catherine's Church, founded in 1252. The Old Town, with its 17th and 18th-century ensemble, is unique in the Baltic states. The Venter Rapid, Europe's widest natural rapid, and the Koldega Brick Bridge, one of the longest of its type, are notable landmarks. The waterfall, formed on Devonian dollar stone, was part of a medieval shipping route. Fishing weirs were used to catch salmon and sturgeon. In 1997, the area was designated a natural monument.

Explain the significance of the Venta Rapid and its features.

What were the historical attempts made to build a shipping route around the falls in Kuldiga?