The Echimiazin Cathedral, a world cultural heritage, is the first cathedral in Armenia, which is very old and was first built from the third century AD. The museum inside the cathedral is dedicated to many mythological treasures, including the fragments of Noah's Ark and the crucifixion of Jesus. If you can't see it all day long, the lights on the exhibits are perfect, and the gold and jewelry are set on it. The treasures created by various gemstone utensils are very exquisite and dizzying.