First Tower of Ar tonelico

The First Tower of Ar tonelico (アルトネリコ第一塔), also known as the Tower of Eoria (エオリアの塔), is the namesake of the Ar tonelico series, and the tallest among the three towers that form the Ar tonelico amplification complex.

It's located in the region of Sol Ciel, former nation of El Elemia, and it's the only Tower that was built through engineering and construction, opposed to the Second and Third Towers, which were built through a Reyvateil's power. Its name means The Only Divine Tree in Hymmnos.

History
The First Tower of Ar tonelico was initially planned as a method to increase the power and blessings that the Songstones and sounds could bring to the humans, in an attempt to bring an era of unbelievable prosperity to the world. For this purpose, both Humans and Teru worked together, joining their knowledge of science and magic to create something that surpassed everything that was done in previous times.

The construction of the first prototype to Ar tonelico, the Tower of Origins, was started on 2932 AD; a decade before the Reyvateil project started, and it was completed in 2968, time in which the first tests on it started. However, when it began to be put to practical use in 2982 AD, soon enough it became apparent that the Tower of Origins would be unable to accomplish the goals for which it was created, in part because of lacking the power to execute magic more complex than a rudimentary weather change, and in part because its database was unable to contain all of the information about Hymmnos that was created and compiled during the history of mankind. Due to this, it was decided that the Tower of Origins project would be abandoned, and instead, it would serve as a basis for the true Ar tonelico tower, whose construction started in 2983 AD.

A few years later, taking advantage of the height of the Tower, a new project was started in parallel to it: the development of the New Continent of Horus. It was started in 2990, while the mechanism of the Tower that would allow it to stay afloat at its planned altitude, the Plasma Bell, began to be developed two years later.

On 2997, the Tower was already halfway completed, allowing the Plasma Bell to be used in its first field test three years later, and it resulted in a complete success.

The Tower was finally completed in 3013 AD, and finally it began servicing the people, government and military of El Elemia, who used the Tower through singing in special terminals. Howevr, contrary to peaceful uses for it was planned, the government of El Elemia decided to use it to gain the upper hand in their thousand years-old war with the nation of El Duel, located in the region of Sol Cluster. For this purpose, when the war had gotten into an stalemate in 3031, they sent a massive shockwave through the planet's mantle to destroy El Duel and its surrounding areas, but this ended in a disaster: the shockwave was so strong that it cracked the Heart of the Land of Ar Ciel, causing the Seven Bloodstains, a chain of massive eruptions of plasma and lava that devastated the area of Sol Cluster, completely annihilated the region of Syestine and caused widespread panic throughout the world.

It was during this time that the very first Reyvateil was created: the Reyvateil Origin Eoria, and that El Elemia started to work together with the governments of Metafalss and Sol Cluster in the AHPP, in an attempt to repair the damage that was caused to the planet. Likewise, they also planned the construction of other two Towers to expand the broadcast range of the First Tower, so the powers harnessed by their Reyvateils could be used anywhere in Ar Ciel.

A few years later, a group of rogue Teru from Syestine, in revenge for the destruction of the land, infiltrated the Tower and destroyed the main power lines that were connected to the Grathnode Discs, which ultimately caused them to overload and shatter, releasing a great quantity of energy and shockwaves which caused the destruction of the planet's Heart of the Land, the devastation of the land and its subsequent concealment by the Sea of Death, and the formation of the Blastline, in the event that is currently known as the Grathnode Inferia.

{More coming later...}

Functions & Characteristics
{More coming later...}

Structure & Mechanisms
{More coming later...}

Important Locations & Settlements
{More coming later...}