In Norse mythology, Aegir is recognized as the King of the Sea and is one of three giants who coexisted with the Aesir, alongside Lue, who symbolizes fire, and Kari, representing air. The name Aegir is closely tied to the concept of water, embodying the essence of the sea itself. His dominion is multifaceted, encompassing both benevolent and malevolent traits, all linked to the ocean. For instance, the river Eider is referred to as “Aegir’s door,” while his turbulent waves and eddies, known as “Aegir’s jaws,” pose a threat to ships navigating the waters. In comparative mythology, Aegir is akin to the Greek god Poseidon and the Roman deity Neptune.

Typically depicted as an elderly figure with a flowing white beard and claw-like fingers, Aegir’s appearance above the water often signaled impending doom. Sailors harbored a deep-seated fear of him, knowing that if he emerged, it could mean their vessel would be dragged to the ocean’s depths. Additionally, Aegir owns a significant ship named Aegor, a gift from Thor and Tyr. In this vessel, he concocts the mead of life using the blood of Baldr, symbolizing the nourishing and life-giving qualities of the sea. According to mythology, life originated from the salty waters, and following Ragnarok, a new world will once again emerge from the sea.

Danish tradition holds that Aegir resides on Læsø with Ran, a formidable giantess known for causing storms and shipwrecks. Meanwhile, Icelandic myths suggest Aegir and Ran inhabit magnificent gold-adorned halls beneath the ocean, possibly on the island known as Hlésey or an ancient name for Jan Mayen, recognized before 1614. Despite his formidable nature, Aegir is known for his hospitality to the gods, often inviting them to sumptuous feasts. However, it was during one such gathering that Loki’s anger led him to insult the Aesir, which resulted in them capturing and binding him in a cave, where he is destined to remain until the end of days.

Aegir’s progeny are believed to be the waves, with his nine daughters mirroring the nine mothers of the god Heimdall. The daughters, bearing names such as Himinglæva, Dufa, Blodughadda, Hefring, Ud, Hrønn, Bølge, Drøfn, and Kolga, likely symbolize different poetic interpretations of “wave.” For the Vikings, the sea was critical for trade and access to resources, possibly explaining Aegir’s association with prosperity.

Notably, a ceramic tile artwork created by Reistrup and designed by Lorentz Frølich is displayed at Copenhagen City Hall, prominently featured at the top of the presidential staircase. The piece, titled “Aegir says goodbye to his daughters after a guest bid on Læsø” or simply “Aegir’s guest bid,” was recognized with a gold medal at the Great Exhibition in Chicago in 1893, marking the 400th anniversary of America’s discovery. The intricate tile work inspired by Aegir is complemented by fine stucco details crafted by the town hall’s architect Martin Nyrop, featuring ash trees emblematic of Yggdrasil, the life tree, alongside dried fishing nets. The backdrop of Øresund rests tranquil, while the ceiling brims with seagulls, indicative of the marine bounty. This comprehensive decoration narrates the origins of Copenhagen, with Aegir depicted as the nurturing element that catalyzed the herring fishery, establishing the trading hub pivotal to the city’s founding by Bishop Absalon.