Alexandra Palace railway station is on the Great Northern Route that forms part of the East Coast Main Line, and takes its name from the nearby Alexandra Palace in the London Borough of Haringey, north London. It is 4 miles 78 chains (8.0 km) down the line from London King's Cross and is situated between Hornsey and either New Southgate on the main line or Bowes Park on the Hertford Loop Line which diverges from the main line just north of Alexandra Palace.
It is in Travelcard Zone 3. All trains serving it are operated by Great Northern.
It is the only surviving station of three that have served Alexandra Palace. A former station also named Alexandra Palace, sited actually at the venue, was on the Highgate-Alexandra Palace Line, while Palace Gates (Wood Green) station was on the Palace Gates Line.
More information on the Wikipedia page [1].
The Crossrail 2 page is [crossrail2.co.uk/stations/alexandra-palace/].