The limitation of territorial expansion and the implementation of the idea of a compact city are generally accepted paradigms of spatial development of contemporary cities. In consequence, actions are taken to improve the quality of city landscape and revitalise vacant areas. This study approaches the process of city regeneration as transformation and supplementation of the existing urban structure as well as creation of multifunctional, structurally, socially and ecologically sustainable spaces. The article presents the problem of creation of new-inner city residential areas. The study was conducted on three housing estates located in post-industrial and post-military areas: Harbourside Development in Bristol (UK), City Park and Ułańskie Estate in Poznań (Poland) and Browar Gdański in Gdańsk (Poland). The article includes analyses of relations between the estates and their surroundings, spatial structure parameters and architectural, urban and scenic characteristics. It includes assessment of the legibility, consistency, diversity and quality of the urban landscape.
Numerous barren land areas are found within administrative boundaries of cities. They include both former farmland located at the outskirts of cities, as well as vacant plots, postindustrial plots or former railway infrastructure plots. Barren plots are integral elements of the urban landscape and contemporary scientific concepts indicate their important role in the functioning of urban ecosystems. Abandoned land provides a potential for the development of green infrastructure and further development of recreation areas. At the same time some abandoned plots are informally adapted by local residents to suit their needs, transforming them into community gardens and recreation areas. This paper presents results of studies conducted by the authors in selected derelict areas in the city of Poznań. Analyses were conducted on their type, origin, size and location within the city. Observations were also recorded on the methods to adapt abandoned land by local communities.