The Obelisk of Theodosius is an ancient Egyptian monument that stands in the heart of Istanbul, Turkey. Originally erected in Heliopolis, Egypt, it was brought to Constantinople by the Roman Emperor Theodosius I in the 4th century AD. The obelisk is made of pink granite and is about 25 meters tall, adorned with hieroglyphics that celebrate the achievements of the Egyptian pharaohs. Today, the obelisk is located in the Hippodrome of Constantinople, a historic site that once hosted chariot races and public events. It serves as a reminder of the rich cultural exchanges between Egypt and the Roman Empire, showcasing the artistry and engineering of ancient civilizations.