I spoke in previous posts about the richness you can find in color and lines in Istanbul spaces. This is traceable back to the what is left from the early Christian era and mostly present in the Ottoman art.
For example, the sultans loved using recurring patterns and were not afraid to show it! Topkapi palace is the best example of using rich and heavy tiles for decorating interiors and outside walls.
Whether you walk around the chambers of the Sultan’s harem or outside around the buildings, the walls, the ceilings, the windows prove the Ottoman rulers’ opulence and desire to impress.
We may not wish to show off like that anymore but we can still make use of traditional patterns and integrate them in our daily interiors. You can use floral and rich motifs for cushions to bright up the interior. Geometrical patterned wallpapers and carpets are great to give symmetry and balance to an interior. Or go wild and use a traditional kilim rug in an industrial lofty space.