古老马厩
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圣莱热的古老马厩 “Ancien Manége” 建于1828年至1829年，由建筑师弗朗索瓦·布罗莱 “François Brollet” 在政府的倡议下设计。建筑的构成遵循19世纪初军事建筑的规范，中央设有一个封闭的竞技场，两侧是较低的纵向建筑，作为马厩使用。高度差使得中央空间可以通过一系列高窗户采光，同时也用于通风竞技场上方的阁楼。一个半圆形的圆形大厅作为主要入口和骑士的住所，完成了中央体量。四个塔楼定义了建筑的角落，内设次要空间。
随着汽车的日益普及和城市中心对骑马活动的拒绝，马厩在1930年代被改造成车库。为了增加其作为停车场的容量，建筑在1950年经过建筑师让·卡莫莱蒂 “Jean Camoletti” 的项目进行了重大改造。引入了两层混凝土板和一个通往上层的坡道系统，改变了建筑的空间配置。各种大型开口重新定义了立面，坡道的新体量改变了圣莱热街 “Rue Saint-Léger” 上的立面构成。
由于马厩的利用率低，居民协会“马厩为所有人” “Manège pour Tous”发起了一项参与性过程，旨在将建筑重新融入城市生活。该协会的提案促成了2014年日内瓦市政府发起的一个竞赛，旨在建设一个多功能建筑，容纳邻里协会、托儿所、玩具图书馆、学校餐厅和一系列共享空间。
项目的出发点是理解建筑的空间和结构配置，并评估其成为可居住的市民建筑的潜力，尽量减少干预。该项目提议重新利用和调整现有的结构和建筑元素，结合选择性拆除、局部修复和最小的新增部分，旨在利用建筑各部分的气氛、建筑特性和热性能。
建筑从朱利安-皮亚肖街 “Rue Julienne-Piachaud” 进入，通过新的铺装清晰了城市街区，与特雷伊尔长廊 “Promenade de la Treille” 和入口附近的新公共空间建立了视觉关系。公共主要入口位于建筑的左侧，从博尔德福广场接近时正面可见。从塔楼进入建筑，使得半圆形的圆形大厅成为与街道直接相连的客厅，保留了1950年的混凝土结构和阳台。
下层混凝土板被保留，形成一个服务底座，所有公共服务设施均放置于此，释放出所有面向外部的窗户周边空间。中间的混凝土板部分拆除，以释放大型拱形开口，并获得一个宽敞的公共大厅，同时也由服务底座提供服务。流线在与塔楼对齐的两个平行条形空间中解决，一个是面向公众的前部，另一个是面向员工的后部。
所有新的附加部分均采用木材，形成定义一楼大型服务块的隔断，以及两个大型隔断，声学上将大厅与建筑的其他部分隔离。唯一的新结构是南翼的新屋顶，源于圣莱热街上高体量的拆除，同时也成为上层的露台。
为了使大厅能够同时容纳多个用户或在特殊场合用作一个大房间，可以升降一个悬挂结构，形成大厅内部分声学和热隔离的空间。该元素悬挂于现有的木结构上，并通过中央天窗提供自然采光和通风。
该项目试图使热包的优化与建筑的遗产价值保护相兼容。为了尽量减少对现有木结构的干预，现有的通风阁楼被保留，并隐藏在包括热绝缘的新悬挂天花板后面。通过引入新的绝缘橡木框架窗户，热性能也得到了提升，用户可以进行多种操作。
新的插入部分减少为两种类型：一种是立体特征的，补充现有结构以恢复建筑的形式清晰度；另一种是木制的，适应当前的使用需求。这种构造二分法的引入使我们能够在建筑中建立一种适应性随时间变化的秩序。意图不是建立一种与现有结构对立的新形式语言，而是建立新元素与已有结构之间的对话。
木材作为主要材料的使用，允许未来对建筑使用方式进行可能的调整，将此次干预视为古老马厩 “Ancien Manége” 转型过程中的又一个阶段。通过这种方式，项目不仅尊重了建筑的历史和文化价值，还为其未来的多样化使用提供了灵活性和适应性。整体设计旨在创造一个既能满足当代需求，又能保留和展示建筑遗产的空间，确保其在未来的可持续性和活力。
The Ancien Manége of Saint-Léger was built between 1828 and 1829 at the initiative of the Government by the architect FRANÇOIS BROLLET. The composition of the building followed the canon for military buildings of the early 19th century, with a covered arena at the centre of the construction, flanked by two lower longitudinal buildings used as stables. The difference in height allowed for the central space to be lit by a series of high windows, also used to ventilate the combles above the arena. A semi-circular rotonde, determining the main entrance and the house for the squire, completes the central volume. Four towers that housed secondary spaces defined the corners of the building.
Following the increasing popularity of the car and the rejection of equestrian activities in the city centre, in the 1930 is transformed into a garage. To augment its capacity as a parking for vehicles, the building is considerably transformed in 1950n following the project by the architect JEAN CAMOLETTI. The introduction of two concrete slabs and a system of ramps to access the upper levels modified the spatial configuration of the building. Various large openings redefined the facades and a new volume for the ramps altered the composition of the facade on Rue Saint-Léger.
The fact that the Manège was an underutilized infrastructure, originated a participatory process promoted by the association of inhabitants Manège pour Tous with the aim of returning the building to the life of the city. The proposals of the association led to a competition launched by the Geneva town hall in 2014 for a multipurpose building housing spaces for the neighbour’s association, creche, toy library, school restaurant and a series of shared spaces.
The point of departure of the project is the comprehension of the spatial and construction configuration of the building as found and assessing its potential to become an inhabitable civic building with minimum intervention. The project proposes the reutilization and adjustment of existing structural and construction elements combined with selected demolitions, punctual repairs and minimum additions with the intention of utilizing the atmospheric, architectural and thermal qualities of the various parts of the building.
The building is accessed from Rue Rue Julienne-Piachaud via a new pavement that clarifies the urban block, establishing a visual relation with the Promenade de la Treille and new public space in the proximity of the entrance. The main access door for the public is placed on the left side of the building, becoming frontally visible when approaching from Place du Bourg-de-Four. Accessing the building from the tower allows for the semi-circular rotunda to become a living room in direct relation with the street, preserving the 1950 concrete structure and balconies
The lower concrete slab is be preserved forming a service plinth where all common services are placed, liberating from obstructions all the perimeter spaces with windows to the exterior. The intermediate concrete slab is partially demolished to liberate the large arched openings and obtain a generous common Salle also serviced from the services plinth. Circulation is resolved in two parallel bars aligned with the towers, one of more public nature at the front and one for staff at the back.
All new additions are realized in wood, taking the form of partitions that define the large block of services on the ground floor and two large partitions that acoustically exclude the Salle from the rest of the building. The only new structural addition is a new roof over the south wing, result of the demolition of the higher volume in Rue de Saint-Léger, also becoming a terrace on the upper level.
In order for the Salle to be occupied by multiple users simultaneously or used as one large room for special occasions, a suspended structure can be lowered or lifted to form a partially acoustically and thermally separated space within the Salle. This element is hung from the existing timber structure and lit via a central skylight that also provides natural ventilation to the salle.
The project tries to make compatible the optimization of the thermal envelope and the conservation of the heritage values of the building. In order minimize the intervention in the existing timber structures, the existing ventilated lofts are preserved and concealed behind new suspended ceilings including thermal insulation. The thermal performance is also enhanced with the introduction of new insulated oak frame windows with multiple operation possibilities form the users.
New insertions are reduced to two types: the ones of stereotomic character, that complete the existing structure to reestablish the formal clarity of the building, and the ones realized in wood that adapt to current uses. The introduction of this tectonic dichotomy allowed us to establish an order in construction that manifests its adaptability over time. The intention is not to establish a new formal language opposed to the existing, but rather to establish a conversation between the new elements and those already in place.
The use of wood as a main material allows for possible future alterations to the way the building might be used, understanding the intervention as one further stage of the on going process of transformation the Ancien Manége has undergone.