[vpauzuolis]

------------------------
Official sources http://forum.skyscraperpage.com/showthread.php?t=103927&page=13
Unofficial sources http://www.wirednewyork.com/forum/showthread.php?p=159913

Building Name: Intercontinental Hotel
Native Name:
Other Names:
Address: nassau street
City: new york city
Postal Code:
State/Province: new york
Country: usa
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL:
Architect: Gene Kaufman
Interesting Facts/Records (in own words):

Heights--

PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna:
- spire:
- roof: 600ft
- top floor:
- other heights:

Current Building Status (Built, Proposed, Canceled, Destroyed, etc...):proposed

Construction Dates--
- started: 2008
- finished:
- destroyed:


Above ground floors: 55
Below ground floors:
Floor-to-floor height:
Gross Floor area:
Elevator count:
Unit count: 360

Structure Type(s): highrise
Building Use(s): hotel,restaurant, conference
Building Style(s):
Building Materials:


------------------------
Official sources:http://www.wirednewyork.com/forum/showthread.php?t=9408
Unofficial sources:http://forum.skyscraperpage.com/showthread.php?t=103927&page=13

Building Name: 110 West 57th Street
Native Name:
Other Names:
Address: 110 West 57th Street
City: new york city
Postal Code:
State/Province: new york
Country: usa
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL:
Architect: Costas Kondylis and Partners LLP Architects

Interesting Facts/Records (in own words):

Heights--

PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna:
- spire:
- roof: 175m estimate
- top floor:
- other heights:

Current Building Status (Built, Proposed, Canceled, Destroyed, etc...): proposed

Construction Dates--
- started: 2007
- finished:
- destroyed:


Above ground floors: 50
Below ground floors:
Floor-to-floor height:
Gross Floor area: 260 000sq ft
Elevator count:
Unit count:

Structure Type(s): highrise
Building Use(s): mixed use( office,residential,theatre)
Building Style(s): modern
Building Materials:
------------------------

-----------------------
Official sources:http://www.urbanplanet.org/forums/index.php?showtopic=19341
Unofficial sources:http://www.raleighing.com/area_north_hills/index.html

Building Name: North Hills East Office Tower I
Native Name:
Other Names:
Address: Six Forks Road at I-440, NE corner
City: raleigh
Postal Code:27604
State/Province: nc
Country: usa
Official Building Website URL:
Skyscrapers.com (Emporis.info) URL: http://www.emporis.com/en/wm/bu/?id=northhillstower-raleigh-nc-usa
Architect:
Interesting Facts/Records (in own words):

Heights--

PLEASE PROVIDE SOURCES FOR HEIGHTS, OTHERWISE WE WILL ASSUME THEY ARE ESTIMATES.
- antenna:
- spire:
- roof: 260ft
- top floor:
- other heights:

Current Building Status (Built, Proposed, Canceled, Destroyed, etc...):
proposed
Construction Dates--
- started: 2007
- finished: 2009
- destroyed:


Above ground floors: 20
Below ground floors:
Floor-to-floor height:
Gross Floor area: 25,548 m²
Elevator count:
Unit count: 910

Structure Type(s): highrise
Building Use(s): office,retail,parking
Building Style(s):modern
Building Materials:steel,glass
-----------------------

[LMich]

The first two don't have good enough sources. And, the sources don't even give the 600-foot height you posted.