Penteli is a mountain located in Greece, specifically in the region of Attica. It is known for its beautiful natural scenery and rich history. The mountain is part of the Penteli mountain range and rises to an elevation of about 1,109 meters. It is also famous for its white marble, which was used in ancient times for constructing many significant buildings, including parts of the Parthenon. The area around Penteli is popular for outdoor activities such as hiking and mountain biking. It is home to several monasteries, including the Monastery of Penteli, which dates back to the 16th century. The mountain's proximity to Athens makes it a favored destination for both locals and tourists seeking nature and tranquility.