Tbilisi is most notable for its abundance of Art Nouveau buildings and details (common in Sololaki and Chughureti), which flourished from the mid-1890s to through the end of Russian rule. Art Nouveau was decreed as bourgeois by communist authorities, who introduced experimental modern architecture. The more conservative and historically-inflected Stalinist architecture in Georgia is embodied by the 1938 Marx-Engels-Lenin Institute building ("Imeli"), now housing the Biltmore Hotel Tbilisi.