Developer Evan Makovsky has proposed the construction of a 673-foot [1] spiral observation tower in downtown Denver.
The project aims to establish one of the tallest structures in the city, creating a primary destination for tourists and local residents to view the skyline.
The proposed tower would be located on the block encompassing 1,546 California Street and 1,555 Welton Street [2]. This specific site in the heart of the city is intended to host the spiral design, which would serve as a vertical landmark for the region.
Public reporting on the proposal first surfaced in July 2025 [3]. Since that initial announcement, the project has moved through various planning stages to determine the feasibility of the unique architectural design.
As of this week, the tower remains under engineering review [4]. This phase is critical to ensure the 673-foot [1] structure meets safety and zoning requirements before construction can begin.
Makovsky said the tower is intended to provide a new observation experience that differs from traditional skyscrapers. The spiral geometry is designed to offer changing vistas as visitors ascend the structure.
The project continues to undergo technical scrutiny to finalize the blueprints. City officials and engineering firms are currently evaluating the structural integrity, and the impact the tower will have on the surrounding downtown grid.
“A 673-foot spiral observation tower is being proposed for downtown Denver.”
The proposal represents a shift toward 'experience-based' architecture in Denver's urban core. By focusing on a dedicated observation tower rather than a mixed-use office or residential building, the developer is betting on tourism and leisure as primary drivers for downtown revitalization.
