The four teams shortlisted in an international contest for a permanent new urban climate island installation in Felipe VI Park in Logroo, Spain have been revealedOrganised by local cultural festival Concntrico the two-stage competition sought proposals for a new urban climate island installation which offers thermal comfort and helps residents mitigate the challenges of rising local temperatures caused by the climate crisis.The finalists are 600 Trees by Carlos Portillo from Canada, A Stone at the Waters Edge by US-team clovisbaronian featuring Georgina Baronian and Sam Clovis, and Al agua patos by Spains K37.lab featuring Carlos Iraburu Elizalde, lvaro Oriol, Jos Rodrguez-Losada and Carlos Iraburu Bonaf.The shortlist is completed by Air Column by mft architects of Spain featuring Flavio Martella, Maria Vittoria Tesei withsnstudios Adrin Haibara and Vanessa Mingozzi. The shortlisted teams were picked from 252 proposals representing 49 countries which were submitted to the contest.Competition site: Felipe VI Park climate island, LogrooThe winning 80,000 installation will be constructed around a lake in the city centre Felipe VI Park on a stretch of terracing featuring a hexagonal square. Applicants were encouraged to use a range of measures such as shading structures, tree planting, water permeable soft natural soil and benches to help reduce temperature at specific points.Logroo, in northern Spain, is a historic city overlooking the River Ebro and is the capital of the Rioja wine-producing province.Earlier this year, the city hosted a series of contest-winning installations selected as part of an annual open call held by The Logroo International Festival of Architecture and Design also known as Concntrico.The festival has delivered more than 70 pop-up installations and pavilions across the centre of the historic city since it was founded in 2015.Competition site: Felipe VI Park climate island, LogrooThe latest competition set out to create a new permanent infrastructure at the western end of Felipe VI Park close to Hermanos Hircio, Ingeniero Pino and Amorena streets that helps local inhabitants mitigate the impact of increasing heat waves.The finalists will now be judged on their projects integration into the surrounding architectural and urban environment, versatility, material sustainability, promotion of circular economy and feasibility.The four teams will each receive 1,500 to participate in the second phase of the contest and the overall winner will receive a 10,000 prize. The competition organisers will be responsible for the production and construction of the winning proposal in coordination with the selected team.The shortlistShortlisted: 600 TREES by Carlos Portillo, Canada600 TREES by Carlos Portillo, CanadaThe project aims to transform 180m2 of urban space into a self-sustaining micro-forest. The proposal includes a raised ring with lighting and recycled rocks, creating an accessible and environmentally friendly space for visitors. This innovative proposal will promote carbon sequestration, urban cooling and biodiversity, providing shade and shelter for birds and insects. As the forest grows, trees will gradually cover the ring, symbolising the integration of nature into the urban space.Shortlisted: A Stone at the Waters Edge by clovisbaronian (Georgina Baronian, Sam Clovis), United StatesA Stone at the Waters Edge by clovisbaronian (Georgina Baronian, Sam Clovis), United StatesThe proposal uses the architecture as a thermal battery, taking advantage of the materials properties without mechanical systems to cool the environment. A ventilated void between two layers of concrete reduces embodied carbon and allows passive cooling through a night ventilation system. Recycled concrete and the use of site soil as a mould ensure durability, reduce waste and create a unique structure that integrates into the waterscape.Shortlisted: Al agua patos by K37.lab (Carlos Iraburu Elizalde, lvaro Oriol, Jos Rodrguez-Losada, Carlos Iraburu Bonaf), SpainAl agua patos by K37.lab (Carlos Iraburu Elizalde, lvaro Oriol, Jos Rodrguez-Losada, Carlos Iraburu Bonaf), SpainThe aim of the project is to create a climatic island that revitalises a unique space and encourages interaction with the natural environment. It will be structured in three elements: two main layers and a boundary connecting them, forming a central garden with vegetation adapted to the climate. A modular pergola will provide shade and, together with an interactive and accessible pond, the aim is to reactivate and breathe new life into this space, inviting the community to enjoy it.Shortlisted: Air Column by mft architects (Flavio Martella, Maria Vittoria Tesei) + snstudio (Adrin Haibara) + Vanessa Mingozzi, SpainAir Column by mft architects (Flavio Martella, Maria Vittoria Tesei) +snstudio(Adrin Haibara) + Vanessa Mingozzi, SpainThe functioning of the project is based on the principle of the solar chimney, a natural system that uses solar energy to trigger convective movements. Inside the semi-transparent column, the suns rays heat the air and cause it to rise. This movement creates a depression at the base that draws in fresh air, generating a constant natural breeze.