Kandilli Rasathanesi is an observatory and earthquake research institute located in Istanbul, Turkey. It was founded in 1868 as a meteorological observatory by the Ottoman Empire, and over time its research focus shifted to include geophysics and seismology. Today, Kandilli Rasathanesi is a leading institution for monitoring and researching seismic activity in Turkey and the surrounding region. Its work is important for developing earthquake preparedness measures and helping to reduce the risk of damage and loss of life from earthquakes. In addition to its scientific work, Kandilli Rasathanesi is also a popular tourist destination in Istanbul, with a museum and observation deck that offer visitors a chance to learn about earthquakes and see the instruments used to study them.