From time to time I pick up on suggestions of good hotels in cities far and wide only to find they have they have now disappeared without trace - no mention of them anywhere.

Obviously in places like Hong Kong & Vegas - they just get knocked down and its quite widely publicised (Hilton, Furama etc), others it is less obvious what happened (bankruptcy, apartments, name change)?

Here are a few that seem to have disappeared, anyone know what happened to them?

The Imperial Hotel, Bangkok - friends of mine loved this place
Mayfair Regent, New York (Used to get Rave reviews)
Dorset Hotel, New York
Victoria Hotel, Hong Kong

Any others?