Banking, Concierge, Conferencing Facility, Controlled Access, Convenience Store, Energy Star Labeled, Food Court, On Site Management, Restaurant, Security System Located in the CBD submarket in Downtown Houston, Harris County. Primarily located on Jefferson Street at Smith Street, with easy access to I-45 and Highway 59. There is direct auto access from metropolitan and suburban areas by urban thoroughfares and freeway system. Pedestrians can access Jefferson Towers at Cullen Center buildings from the concourse level sky walks and the downtown tunnel system, via 1600 Smith. Ground-level downtown and suburban bus transportation are available at several locations.