Det Ny Teater
One of Denmark's top stages, usually lays stage to famous musicals or plays like Chicago, Phantom of the Opera etc, but the performance may in Danish so check ahead. The striking building is one of the most beautiful theatres in Northern Europe following a grand renovation in the 1990s, and received the prestigious 'Europa Nostra' award for the efforts.
Tycho Brahe Planetarium
Named after the Danish Astronomer who formed he basis for the discovery of planetary motion, this Planetarium features a small but good free exhibit on Astronomy, a 4000 star projector, OmniMax theatre, and a restaurant.
Vandkulturhuset
If you are installed at a cheap hotel without private baths or want some inside activities on a cold or wet day, the swim centre is a good option - No time-limits, super-ellipse shaped pool, climbing and diving pool, warm spa pool, and other water activities.
Copencabana
Jump in the harbor for a swim at Copencabana harbor swimming bath, an artificial beach, with sand, palm tress, and a Moroccan feel to it. there is a jumping tower for fun, and a large pool, with sea water from the harbor. There is also a beach bar here open during the weekends, with sofas, an chilled music for lounging in the sun.
Imperial Cinema
On a rainy day, you can go for a movie, in the largest single movie theater hall in Northern Europe, seating a staggering 1102 people. Almost all major movies premiers here - and movies are not dubbed in Denmark.