Colonnade Row Westchester marble and linked with a colonnade of Corinthian columns providing the homes with their current name. The marble for the buildings was found at Sing Sing, where the convicts worked to cut it for use in construction. The precise year of the buildings' construction, as well as the architect responsible are subject to some debate. The architects generally credited with Colonnade Row's design is Alexander Jackson Davis, Ithiel Town, and James Dakin, who were believed to have designed the homes for the Astor and Vanderbilt families. Town and Dakin are believed to have begun work on the project, which
I-5 Colonnade section featuring Cyclone and The Octagon Of Death, a rock jumble descent named the Waterfall, and Downhill/Freeride lines including The Offramp, Holy Chute, and Pips Hips. The I-5 Colonnade bike park has paved the way for other mountain bike facilities in the state of Washington and beyond. Using the available space under the I-5 freeway has been heralded as a highly innovative approach to bring mountain biking to the intercity environment. The park transformed the area from a drug infested encampment to a refuge for outdoor recreation. I-5 Colonnade I-5 Colonnade in Seattle, Washington, United States, is a city park