Texas Eastern planned to build elevated walkways, people movers, and underground garages.

Houston Center was one of the largest private development projects ever, however only a small portion of the plan was realized, leaving a large swath of downtown Houston covered in parking lots and vacant land.

Panhandle planned to move out of the 900,000 square feet (84,000 m2) of office space that it occupied in Houston Center and move its operations and 1,300 employees at Houston Center to its corporate headquarters near the Uptown District.

[10] In 2004 Crescent attempted to sell a 50% equity position in both Greenway Plaza and Houston Center.

[1] In addition, in 2004 many of the 32 blocks that were originally scheduled to be a part of the Houston Center development remained undeveloped.

[12] In December of that year Brookfield Property Partners finalized plans to buy the center.

[13] Opened in 1978, this building, originally called 1 Houston Center, has 46 floors with Class A office space[14][15][16] and is located at 1200 block of McKinney Street.

[21] In 2000 Ernst & Young occupied 140,000 square feet (13,000 m2) of space on five floors in 1 Houston Center.

[24] On November 22, 2005, Alain Robert, a French rock and urban climber nicknamed "Spider-Man", was arrested attempting to climb the building.

[25] In 2008 the law firm Fish & Richardson opened an office in 1 Houston Center on October 1, 2008.

Around that time, LyondellBasell renewed its lease for 358,138 square feet (33,272.1 m2) of space in 1 Houston Center.

Landar Corporation, Lanier's company, leased 9,700 square feet (900 m2) in 2 Houston Center.

[30] In 2008 Crescent and the nonprofit Environmental Defense Fund worked together for 10 weeks to cost-effectively upgrade 2 Houston Center.

As a result, Crescent will install new lighting, mechanical, and office equipment systems that will reduce the building's total electricity usage by 11%.

Crescent plans to reduce 2 Houston Center's electricity usage by 20% over a 10-year period beginning in 2008.

[31] In 2009 McJunkin Red Man Corporation expanded its lease in 2 Houston Center to 13,865 square feet (1,288.1 m2) of space.

[36] In 2001 RWE Trading Americas leased 25,000 square feet (2,300 m2) of space in 4 Houston Center for its United States headquarters.

Marian Livingston of Calibre said that in 2001 it was difficult for an energy firm to find a large block of vacant space in Downtown Houston because of the tight market.

The tower, opened ahead of schedule in September 2002, was the first multi-tenant development in Downtown Houston completed since 1986.

[8] Halliburton, which signed its lease to occupy a portion of 5 Houston Center in 2002,[10] moved its headquarters there by July 2003.

Fulbright & Jaworski renegotiated and extended its lease in 2003 and retained the possibility of naming rights; as of 2005 the firm occupies 350,000 square feet (33,000 m2) of space.

[43] On February 24, 2005, Crescent completed the joint venture agreement involving the Fulbright Tower; a pension fund investor advised by JPMorgan Asset Management bought a 60% ownership interest in the building and an affiliate of GE Asset Management bought a 16.15% ownership interest.

[44] By March 2005 ChevronTexaco planned to move its operations out of the tower after buying 1500 Louisiana Street in Downtown Houston.

Kelsey-Seybold will take 23,000 square feet (2,100 m2) of space and will house an imaging center, a clinical laboratory, a pharmacy, and primary care and specialty physicians.

Nicholas Ro, Kelsey-Seybold's vice president of strategic and legal affairs, said that if a customer walked into the lobby of 1 Houston Center, he or she would be unable to see the original clinic.

[56] In 1995 the complex held the "Park Shops Holiday Trolley Tour" which traveled to several sites in Downtown with no admission cost.