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1100 15th Street - Central Business District
Height: 540'
Stories: 42
2000-2003
1100 15th Street was first proposed in 2000 by Hines Interests during a brief period of time when downtown's vacancy rate was flirting with 4%.

At 540' tall and 42 stories, coupled with a beautiful design courtesty of Pickard Chilton Architects, 1100 15th Street would have made an impressive enhancement to downtown Denver, giving Denver's skyline the "facelift" that so many believe it desperately needs.

Unfortunately, Hines had trouble signing on new tenants for this 640,000 square-foot tower, and the plug was pulled on the project in May 2003.
     



Reliance Center
Height: 721'
Stories: 57
mid-1980s
Reliance Center was set to rise in the mid-1980s and would have become Denver's tallest skyscraper with 57 stories. A joint venture between Denver developer W. Scott Moore (of Trango fame) and the Reliance Group, the building was slated to rise on Moore's land between 15th and 16th Streets, and Welton and Glenarm, now occupied mostly by the Denver Pavillions.

Trango Tower has also been proposed on this very same site.



Designs by Kevin Roche
Height: NA
Stories: 56
1980s
Admittedly, we here at DenverSkyscrapers.com know very little about these two buildings.

We do know that they were designed by world-renowned architect Kevin Roche and, judging by their twin tower design, we can only assume that they were the original design concepts for the World Trade Center (1675 and 1625 Broadway)



Capitol Tower
Height: NA
Stories: 55
early 1980s
The Capitol Tower, at 55 stories, was designed in the very early 1980s by Denver architect C.W. Fentress (Fentress Bradburn) and would have risen one block south of Lincoln Center. The building would have been within blocks of the Colorado State Capitol, hence its name "Capitol Tower".




Two Tabor Center
Height: 550'
Stories: 41
1980s
Two Tabor Center was set to rise with the other Tabor Center buildings in 1984. The shopping mall and One Tabor were completed first and, in 1984, the groundwork began for this massive 41-story tower. The foundations and elevator cores were completed, but the real estate crash of the 1980s doomed the tower's climb into the sky.

Because the foundations and groundwork for the tower has been completed for the last 20 years, Tabor Center owner Equity Office has toyed with the idea of completing Two Tabor.



Two Tabor Center (1999 redesign)
Height: 550'
Stories: 41
1999
In 1999, when office vacancy rates in Denver hit a 20-year low, Equity Office not only dusted off the original blueprints for Two Tabor Center, but they commissioned an entirely new design.

The new design would have kept the same footprint as the original design (given the foundations already "outline" the footprint of whatever will eventually be built at the site), but the economy soured once again. Why is it that every time Two Tabor is about to rise the economy takes a dive? We're at 0-2 now.
       



One Mile High Plaza
Height: NA
Stories: 35
1980s
One Mile High Plaza would have been a gem on the Denver skyline with its cascading waterfall-type facade. The 35-story tower would have featured a glass wall nearly as impressive as that on 1999 Broadway, another design of Fentress Bradburn. The building was proposed in the mid 1980s but, like so many of Denver's unbuilt towers, fell victim to the real estate crash.



YMCA Tower
Height: NA'
Stories: 51
early 1980s
The YMCA Tower would have risen on the site of the now-landmark YMCA building on the south end of downtown Denver. In 1981, plans called for this 51-story tower to incorporate the YMCA facilities into the bottom seven floors and feature 44 floors of offices above that.




Convention Center Hotel (first version)
Height: 500'
Stories: 38
1999-2001
When Denver voters approved the funding of the expansion of the Colorado Convention Center, they also approved a $50M subsidy that would have aided developer Bruce Berger in constructing an adjoining 1,100-room hotel.

Berger quickly commissioned KCJD Architects of Denver to design this impressive, 38-story version of the hotel. Berger was ultimately unable to get financing for the project, and the City of Denver is now undertaking a new hotel design on its own, also by KCJD Architects.
       



Convention Center Hotel (second version)
Height: NA
Stories: 32
2001-2002
When the original hotel design (above) proved too expensive for financers to stomach, hotel developer Bruce Berger asked KCJD to come up with yet another hotel design.

Bruce Berger is now out of the hotel picture completely, and the City of Denver has taken on the task of building this 1,100 room hotel. Current plans call for a 38-story tower and a 26-story tower as impressive as the first hotel design.



425 15th Street
Height: 324'
Stories: 24
late 1990s
425 15th Street was slated to be built on 15th between Glenarm and Court Streets in downtown Denver. A project of Brookfield Properties, this 24-story tower would have contained 10 floors of parking and 14 floors of office space above that.

Even at a time when Denver's office market was very attractive for new construction, Brookfield was unable to complete this relatively small project.
     



Colorado Center Tower 3
Height: NA
Stories: 18
late 1990s
Colorado Center Tower 3 was set to join Colorado Centers 1 and 2 at the intersection of Colorado Boulevard and I-25, some 10 miles south of downtown Denver.

The metro economy eventually began to slip, dooming the project for the foreseeable future.
 




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