Question: What city are both İstiklal Avenue and Yoros Castle located in?
Context: İstiklal Avenue or Istiklal Street (Turkish: "İstiklâl Caddesi", Greek: "Μεγάλη Οδός του Πέραν", French: "Grande Rue de Péra", English: "Independence Avenue") is one of the most famous avenues in Istanbul, Turkey, visited by nearly 3 million people in a single day over the course of weekends.  Located in the historic Beyoğlu (Pera) district, it is an elegant pedestrian street, 1.4 kilometers long, which houses boutiques, music stores, bookstores, art galleries, cinemas, theatres, libraries, cafés, pubs, night clubs with live music, historical patisseries, chocolateries and restaurants. Yoros Castle (Turkish: "Yoros kalesi" ) is a Byzantine ruined castle at the confluence of the Bosphorus and the Black Sea, to the north of Joshua's Hill, in Istanbul, Turkey.  It is also commonly referred to as the Genoese Castle, due to Genoa’s possession of it in the mid-15th century. Joshua's Hill (Turkish: "Yuşa Tepesi or Hazreti Yuşa Tepesi" ), a hill located on the Anatolian shore of Bosporus in Beykoz district of Istanbul, Turkey is a shrine containing a mosque and a tomb dedicated to Joshua (Turkish: "Hazreti Yuşa" ).  The sacred place, 180 to above sea level, is also an important landmark for vessels coming from the Black Sea.  At the summit of the hill is a terrace with benches for the comfort of pilgrims visiting the mosque and the tomb of Saint Joshua.  To the north of the hill, Yoros Castle is situated. St. Anthony of Padua Church, alternatively known as the Sent Antuan Bazilikası or "Sant'Antonio di Padova Church", "S. Antonio di Padova", "St. Antoine", or locally as "Sent Antuan", is a basilica and the largest church of the Roman Catholic Church in Istanbul, Turkey.  It is located at İstiklal Avenue No. 171 in the Beyoğlu district. The Mısır Apartment or Mısır Apartmanı (Turkish for "Egypt Apartment") is a famed historical building on the renowned İstiklal Avenue in the Beyoğlu district of Istanbul, Turkey.  Over the years, the building has hosted numerous notables persons and businesses, including Mehmet Akif Ersoy, Lazzaro Franco, and Hüsamettin Cindoruk.  It is considered one of the notable examples of Art Nouveau style architecture in Istanbul and was a popular spot for the high society of the city. The Naum Theatre, named after its owners Michel Naum and Joseph Naum, was a theatre and opera house on İstiklal Avenue in the Beyoğlu (formerly Pera) district of Istanbul, Turkey.  It was opened in 1844 and remained active until the theatre building was severely damaged by the Fire of Pera in 1870.  The ruined theatre building was purchased by Ottoman Greek banker Hristaki Zoğrafos Efendi, who built the present-day Çiçek Pasajı on its land plot in 1876. Pera Museum (Turkish: "Pera Müzesi") is an art museum in the Tepebaşı quarter of the Beyoğlu (Pera) district in Istanbul, Turkey, located at Meşrutiyet Avenue No. 65 (adjacent to İstiklal Avenue and in close proximity to Taksim Square.)  It has a particular focus on Orientalism in 19th-century art. Çiçek Pasajı (literally "Flower Passage" in Turkish), originally called the Cité de Péra, is a famous historic passage (galleria or arcade) on İstiklal Avenue in the Beyoğlu district of Istanbul, Turkey.  It connects İstiklal Avenue with Sahne Street. On 19 March 2016, a suicide bombing took place in Istanbul's Beyoğlu district in front of the district governor's office.  The attack occurred at 10:55 (EET) at the intersection of Balo Street with İstiklal Avenue, a central shopping street.  The attack caused at least five deaths, including that of the perpetrator.  Thirty-six people were injured, including seven whose injuries were severe.  Among those injured were twelve foreign tourists.  Among those killed, two were of dual Israel-US nationality.  On 22 March, the Turkish interior minister said that the bomber had links with ISIL. Kuwabara Castle (桑原城 , Kuwabara-jō ) , also known as Takatoya Castle and Suisho Castle, is a "yamashiro" (castle located on a mountain) situated in Suwa, Nagano Prefecture, Japan.  The castle was constructed sometime in the fifteenth century by the Kuwabara clan.  By the time it came under the control of the Suwa clan, it had become a satellite castle to Uehara Castle.  When forces of the Takeda clan arrived in the area in 1542, the lord of Uehara Castle, Suwa Yorishige, retreated to Kuwabara Castle, which was soon surrounded by Takeda soldiers.  The castle fell after a two-day siege.  Yorishige and his two brothers were taken to Kofu.  A month later, they were forced to commit seppuku.
Answer: Istanbul, Turkey