Equally famous for its Riesling wines and its Renaissance houses, picturesque Riquewihr is often overcrowded during the tourist season.
Tourists often visit Riquewihr to purchase Riesling wine at great expense. 
mnli hypothesis: Tourists often visit Riquewihr to purchase Riesling wine at great expense.  premise: Equally famous for its Riesling wines and its Renaissance houses, picturesque Riquewihr is often overcrowded during the tourist season.