The Blue Planet, Public aquarium in Kastrup, Denmark
The Blue Planet is an aquarium in Kastrup with a distinctive exterior shaped like a water whirlpool. The building features aluminum panels and houses more than 50 exhibition spaces filled with millions of liters of water.
The history began in 1939 with a smaller aquarium in Charlottenlund before it was relocated to Kastrup decades later. In 2013, it reopened under its current name and with a modern design at this location.
The facility presents water environments from different regions around the world, from tropical waters to African lakes. Visitors can observe how fish and other marine animals live and interact within their natural habitats.
The location lies near Copenhagen Airport and is easy to reach by car or public transport. Plan enough time to explore the different areas at a comfortable pace.
A main tank holds millions of liters of water and features a transparent tunnel 16 meters long running through it. Visitors can observe hammerhead sharks and rays swimming directly above and around them while walking through.
Location: Tårnby Municipality
Inception: October 16, 1999
Accessibility: Wheelchair accessible
Address: Jacob Fortlingsvej 1, 2770 Kastrup
Opening Hours: Monday 10:00-21:00; Tuesday-Sunday 10:00-18:00
Email: info@denblaaplanet.dk
Website: https://denblaaplanet.dk
GPS coordinates: 55.63800,12.65600
Latest update: December 6, 2025 16:02
Copenhagen brings together centuries of history with recent construction in a walkable city by the water. Nyhavn lines the harbor with narrow houses painted in strong colors, where wooden ships dock beside outdoor cafes. The Little Mermaid sits on a rock at the edge of the sound, a bronze figure that has drawn visitors since the early 20th century. Christiansborg Palace rises near the old city center, while Amalienborg forms a royal residence around an octagonal plaza. The Opera House stands across the harbor with a flat, cantilevered roof, and The Black Diamond adds a modern glass facade to the Royal Library. Further out, The Blue Planet aquarium curves along the coast in Ørestad, and the VM Houses show angular residential design in the same district. Parks and gardens spread across the city, offering green space and different moods. The Botanical Garden collects plants from around the world under glass domes and in open beds. Superkilen Park stretches through the Nørrebro neighborhood with colored surfaces and objects gathered from many countries. King's Garden surrounds Rosenborg Castle with tree-lined paths and lawns where people sit in warm weather. Assistens Cemetery lies quiet among the streets, used both as a burial ground and a place to walk. Tivoli Gardens mixes rides, stages, and flower beds in the center of the city. Strøget runs as a long pedestrian street through the old town. Freetown Christiania remains a self-governed neighborhood with painted buildings and its own rules. Dragør preserves old fishing cottages and cobblestones just outside the capital.
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