The letter is the oldest known Christian documentary evidence from the Roman province of Egypt, providing fascinating details about some of the earliest adherents to the religion.
The famous "Bent" pyramid is now open for visitors for the first time since 1965.
The step pyramid where Djoser was buried was built over 4,600 years ago.
Announcement comes as Sphinx of long-serving ruler sees daylight for the first time in almost 100 years.
A joint German/Egyptian excavation team has recovered relics and the remnants of a temple in Cairo.
Egypt's Ministry of Antiquities said the discovery should showcase Egypt's "true image" and "power" to the world.
The tomb contained the bodies of adults and children stored across multiple burial chambers.
The tomb was found in Saqqara, south of the Egyptian capital Cairo.
The team also found a "mysterious wax head" that is believed to be an exact cast of the 2,500-year-old mummy.
The team will travel through an underground network of chambers and tunnels where it is thought 40 mummies once part of the noble elite were entombed.
The archaeological discoveries were made at Quesna Cemetery, north of Cairo.
Archaeologists also found two animal skulls and three ceramic vessels at the site.
Photographs show one sarcophagus painted with the image of a human in deep blue and ochre.
The woman was buried with ostrich egg beads and pottery.
Archaeologists made the find at Kom Ombo, a unique double temple dedicated to two ancient Egyptian deities—crocodile god Sobek and falcon-headed god Horus.
The results could help scientists to create new nanoparticles that could be used to develop highly efficient solar cells.
People are turning to essential oils to help them combat a plethora of medical problems.
Saqqara is a vast ancient burial ground that once served as the necropolis for the Ancient Egyptian capital of Memphis.
There is no "secret chamber" in the Pharaoh's 3,000-year-old grave, geophysicists concluded.
The Ministry of Antiquities announced the finding on Sunday.
The papyrus contains incantations written in Coptic—an Egyptian language that uses characters based on the Greek alphabet.