The Economist has this chart showing rents for "high-end flats of the type commonly let by expatriates," and guess what, there are three cities that are more expensive than NYC when it comes to a three-bedroom apartment.

Human resources consultancy ECA International "looked at rents of comparable apartments with similar proximity to international schools, embassies and 'social focal points'." Hong Kong's high-end three-bedroom rent is nearly $12,000/month, while it's over $9,000/month in Tokyo. Moscow is next with rents in the $8,000-range, closely followed by NYC.

Rents for Manhattan studios, one-bedrooms, and two-bedrooms have risen year-on-year, according to MNS.