Davelis Cave

Pentele (Ancient Greek: Πεντέλη) was a deme of ancient Attica, situated at the north-eastern extremity of the Athenian plain, at the marble quarries of Mount Brilessus, which was called Mount Pentelicus from this place. The fact of Pentele being a deme rests upon the authority of Stephanus of Byzantium alone, and has not yet been confirmed by inscriptions. The site of Pentele is tentatively located near modern Penteli.

Penteli (Greek: Πεντέλη) is a village and a municipality in the North Athens regional unit, Attica, Greece. It belongs to the Athens rural area. It takes its name from Mount Pentelicus.

A series of wildfires in Greece, during the 2018 European heat wave, began in the coastal areas of Attica in July 2018. 104 people were confirmed dead from the Mati fires. The fires were the second-deadliest wildfire event in the 21st century, after the 2009 Black Saturday bushfires in Australia that killed 173. Over 700 residents were evacuated or rescued, mainly from the seaside settlements located north of the port town of Rafina, namely Kokkino Limanaki and Mati, where rescuers found 26 corpses trapped just meters away from the sea, apparently hugging each other as they died. Boats also recovered corpses from the water, and rescued hundreds of people from beaches and the sea. Two people drowned when the boat rescuing them from a hotel in Mati capsized. Μore than 4,000 residents were affected by the wildfires. The Greek prime minister Alexis Tsipras declared a state of emergency in Attica, and announced a three-day period of national mourning, stating in a televised address, "The country is going through an unspeakable tragedy".After the fires, flags atop the Acropolis and the Greek parliament flew at half mast. The European flags at the European Commission headquarters in Brussels also flew at half mast in honour of the victims. Many countries worldwide helped or offered aid to Greece. A 65-year-old man from Penteli has been arrested for causing the fire through negligence, by burning wood in his garden.

The Interorthodox Centre of the Church of Greece (Greek: Διορθόδοξο Κέντρο της Εκκλησίας της Ελλάδος) is the educational organisation and the convention centre of the Orthodox Church of Greece. It is located in the Holy Monastery of the Dormition of Virgin Mary in Penteli and it is about 15 km away from the centre of Athens.

Mount Pentelicus or Pentelikon (Greek: Πεντέλη, Πεντελικόν or Πεντελικό Όρος) is a mountain in Attica, Greece, situated northeast of Athens and southwest of Marathon. Its highest point is the peak Pyrgari, with an elevation of 1,109 m. The mountain is covered in large part with forest (about 60 or 70%), and can be seen from southern Athens (Attica), the Pedia plain, Parnitha, and the southern part of the northern suburbs of Athens. Houses surround the mountain, especially in Vrilissia, Penteli, Ekali, Dionysos, and north of Gerakas. Marble from Mount Pentelicus is of exceptionally high quality and was used to construct much of the Athenian Acropolis. Later, Pentelic marble was exported to Rome, where it was used in construction and in sculptures.In ancient times it was also called Brilissos or Brilittos (Greek: Βριλησσός, Βριληττός) which is the origin of the name of the nearby suburb of Vrilissia.

Trinemeia (Ancient Greek: Τρινέμεια) was a deme of ancient Attica at which one of the minor branches of the Cephissus takes its rise.Trinemeia's site is tentatively located near modern Kokkinaras.

Rododafni castle (Greek: Καστέλλο της Ροδοδάφνης) is a palace in Penteli, Greece. It is located on the Lord Byron street (Greek: οδού Λόρδου Βύρωνος) on the slope of mount Pentelicus. It was intended as a summer residence for Sophie de Marbois-Lebrun, Duchess of Plaisance and is designed in a neo-gothical style, which was uncommon in 19th century Greece. The name of the palace means Rosetree castle.

The Penteli Observatory (Greek: Αστεροσκοπείο Πεντέλης), also known as the Penteli Astronomical Stationis (Αστρονομικός Σταθμός Πεντέλης), is an astronomical observatory in Penteli, Greece, operated by the National Observatory of Athens. It is best known for housing the historic Newall Refractor, which used to be the largest telescope in the world before its move there. From 1959 to 1980 it was a major site for scientific research, though since then it has been facing severe light pollution problems resulting in its gradual conversion into a public observatory, especially after the establishment of the Visitor Center there in 1995. Nowadays, the most notable research conducted in the location is the one carried out by the Athens Digisonde, an ionosonde used for ionospheric sounding.

The Newall Telescope is a 62.5 centimetres (24.6 in) refractor in the Penteli Observatory in Penteli, Greece. It was built in 1869 by Thomas Cooke for Robert Stirling Newall and when completed it was the largest telescope in the world. It was located at Newall's private observatory until 1891, when it was moved to the Cambridge Observatory where it stayed until its donation to the National Observatory of Athens and its move to the Penteli Observatory in 1959. The telescope is still operational, though it is only used for educational purposes.

The Institute for Astronomy, Astrophysics, Space Applications, and Remote Sensing (IAASARS/NOA; Greek: Ινστιτούτο Αστρονομίας, Αστροφυσικής, Διαστημικών Εφαρμογών και Τηλεπισκόπησης) is a non-profit research institute in Greece with expertise in multidisciplinary astrophysical, space and environmental sciences. It is an independent research Institute of the National Observatory of Athens (NOA) established in 2012 from the merging of the Institute of Astronomy and Astrophysics and the Institute of Space Applications and Remote Sensing. The scientists of the Institute have broad knowledge in various areas of observational Astrophysics, Space Science and Earth observation techniques and their applications. They have established collaborations with research groups in Europe and United States, and their work is recognized through publications in refereed journals, invited talks at international conferences, and coordination of EU-funded and ESA-funded research projects. More details on the IAASARS and its activities can be found in its annual report.

Cydantidae or Kydantidai (Ancient Greek: Κυδαντίδαι) was a deme in ancient Attica, originally of the phyle of Aegeis, after 224/3 BCE of the phyle of Ptolemais, sending one or two delegates to the Athenian Boule.This deme, along with that of Ionidae, venerated the kolokratai; these two demoi were the only ones, as far as we know, to venerate deities together.Its site is located near Mendeli Monastery.

Rodopoli (Greek: Ροδόπολη, meaning "City of Roses", before 1981: Μπάλα - Bala) is a town in the East Attica regional unit, and a northern suburb of the Athens agglomeration, Greece. Since the 2011 local government reform it is part of the municipality Dionysos, of which it is a municipal unit. The municipal unit has an area of 9.550 km2.