Riga Art Nouveau refers to the distinctive architectural style that flourished in Riga, the capital of Latvia, during the early 20th century, particularly between 1899 and 1910. Characterized by its ornate decorations, flowing lines, and intricate details, this style showcases a blend of natural motifs and geometric shapes. The city boasts one of the largest collections of Art Nouveau buildings in Europe, with over 800 structures featuring this design. Notable architects like Mikhail Eisenstein and Julijs Madernieks played significant roles in shaping Riga's architectural landscape, making it a UNESCO World Heritage site.