Büyükdere Avenue Büyükdere Avenue Büyükdere Avenue () is a major avenue which runs through the districts of Şişli (Esentepe quarter), Beşiktaş (Levent quarter) and Sarıyer (Maslak quarter) on the European side of Istanbul, Turkey. It begins at Şişli Mosque and runs in an eastward direction partly under the viaduct of the inner-city motorway O-1 through Mecidiyeköy, Esentepe, until reaching Zincirlikuyu; where it joins with Barbaros Boulevard and turns northward passing through Levent, Sanayi Mahallesi, Maslak and by the Fatih Forest, ending at the Hacıosman Slope on the Sarıyer district border. Its total length is . From Zincirlikuyu to Maslak, it forms a
El Dorado Commercial Historic District El Dorado Commercial Historic District The El Dorado Commercial Historic District encompasses the historic commercial heart of downtown El Dorado, Arkansas. The city serves as the seat of Union County, and experienced a significant boom in growth during the 1920s, after oil was discovered in the area. The business district that grew in this time is anchored by the Union County Courthouse, at the corner of Main and Washington Streets, where the Confederate memorial is also located. The historic district listed on the National Register of Historic Places in 2003 includes the city blocks surrounding the courthouse, as well as