Tripadvisor: you can read unbiased reviews and the web's best travel articles - also on Copenhagen & Denmark.
Copenhagen Airport, all practical information. There is a train every 10th minutes from the airport to Copenhagen Central Station which is written like this: K�benhavn H. Departs from platform 2. Buy tickets for 3 zones, currently 31,50 kroners. You can also buy a return ticket that must be time-stamped in the machine before you get in the train. The journey takes approximately 10 minutes.
Journey Planner, found both in English and auf Deutch, includes both bus and train schedules. No guarantee for international railway travel planning.
Danish State Railways, in English as well.
http://www.dmi.dk/eng/index/forecasts.html
Weather forecast for Denmark, both in German and in English, at the website of Danmarks Meteorologiske Institut. You can also view 5 days' forecast in graphic format, but only in Danish: http://www.dmi.dk/dmi/index/danmark.htm
http://www.tivoli.dk/composite-3351.htm
The famous Tivoli. More than an amusement park. Rock concerts, jazz, ballet, theatre, chamber music and much more. Closes 25th of September until the Christmas bazaar in December.
http://www.bakken.dk/forside.html
Bakken, Worlds oldest amusement park and the place of World Santa Claus Congress
http://www.glyptoteket.dk/?language=en&frames=yes
The New Carslberg Glyptotek, a cultural and artistic treasure next to Tivoli.
Danish Design Centre: cafe, exhibition, shop
Official website of all palaces, castles and gardens in Denmark
Kronborg Castle, the most famous castle of Denmark, well known from Hamlet by Shakespeare.
The Royal Library, and its new building The Black Diamond.
http://www.tycho.dk/in_english/
Tycho Brahe Planetarium. It has the largest screen format IMAX, shown on a 1000 square meters screen. A "must" for every one.
http://www.rundetaarn.dk/sprog.html
"The round tower" Rundetaarnet or Rundetaarn. Rundetaarn is the oldest functioning observatory in Europe. Until 1861 it was used by the University of Copenhagen, but today, anyone can observe the night sky through the fine astronomical telescope of the tower in the winter period. In 13 languages...
http://www.smk.dk/smk.nsf/docs/forside!opendocument
"State Art Museum" Statens Museum for Kunst, or The Danish National Gallery.
http://www.botanic-garden.ku.dk/eng/index.htm
Botanic Garden, another must see in city center, next to Noerreport station and Rosenborg Castle and Danish National Gallery.