The Oosterdokseiland is a major redevelopment project in Amsterdam, at the East side of the Central Station.
The island used to houase a distribution plant of the Dutch Mail, but they left, to make place for new high rise buildings.
You can find the OBA here (the main Public Library of Amsterdam), the Conservatorium, but also one of the largest hotels of Amsterdam, the Double Tree by Hilton Hotel. From the top of these buildings you have a nice view over the old town of Amsterdam.
With &Samhoud Places there's even a restaurant with two Michelin stars.
The works on the island are still a bit of a work in progress, but most of it is finished now, and as a whole, the island is worth a visit.
Main public library of Amsterdam