Accordingly, in sensitive areas, areas of important landscape significance; main roads, walking routes and roads of special importance in terms of administration, trade, tourism; cultural and historical relic areas at provincial and national levels, parks... must comply with regulations on density and architecture.
Notably, in Sub-area 1 of the central wards of Ha Long, it is necessary to protect the view to the high points of the area, such as: Bai Tho mountain, Ba Deo mountain, Bai Chay bridge, and TV tower.
Limit high-rise buildings in central areas when they do not ensure urban technical infrastructure conditions, causing pressure on the population of the area. Limit high-rise buildings in mountainous areas. Encourage low-rise areas on mountains; associated with trees, low density, sloping roof architecture to suit the landscape and current status of the area.
Do not build high-rise buildings continuously that block the view from the urban area to Cua Luc Bay. Develop the area associated with the spatial organization around Cua Luc Bay to create a new development focus for Ha Long urban area and surrounding areas.
In Subdivision 6 of Hung Thang and Bai Chay wards, for construction areas on mountainous areas (excluding projects granted before the time the Architectural Management Regulations were approved), the construction height of the building is < 120 m above sea level.
High density construction in central areas of Bai Chay, Cai Dam, Hung Thang and low density in coastal areas, on mountainous areas.

Limit the construction of continuous coastal structures that obstruct the view inside. Do not arrange new high-rise buildings in mountainous areas (except for projects that have been granted investment and construction licenses).
Research on high-rise architectural works to create highlights and symbols of architectural planning space for Ha Long urban area and tourist service center. The maximum height will be specifically determined during the project research process, ensuring harmony with the heritage landscape of Ha Long Bay.
Hill areas in Hung Thang ward, Bai Chay, the hill west of Hoang Gia hotel, adjust existing projects in the direction of retaining maximum green area, study the arrangement of low-density tourist service points at planned points in the direction of; minimizing leveling, low construction density (<20%), stilt-house architecture. Establish separate urban designs for coastal areas and renovated and embellished areas to guide construction activities in the area.
For new urban areas, regulations on building height and density shall be implemented according to approved zoning plans, detailed plans, and other contents of this Regulation. In special cases where there are changes in density and height, approval from the People's Committee of Quang Ninh province is required.