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
Arkadelphia Commercial Historic District Arkadelphia Commercial Historic District The Arkadelphia Commercial Historic District encompasses the historic commercial core of Arkadelphia, Arkansas, the county seat of Clark County. Arkadelphia was settled in 1842, and its commercial district is located in one of the older parts of the city, near the Ouachita River. Most of the buildings were built between c. 1890 and c. 1920, and are built out of brick and masonry; the oldest building in the district is estimated to have been built in 1870. The district was listed on the National Register of Historic Places in 2011. The district consists of two blocks