This research delves into the come-back of the garden-cities in the wake of recent pandemic changed urban dynamics and reshaping cities, particularly Istanbul. At the onset of the 20th century, E. Howard's book on Garden-cities of To-morrow and his idealized garden-city models gained global prominence. The Pandemic led to people to rethink their living and working conditions and patterns in a way that had not been considered before. Thus, with the regulations imposed by the pandemic, the people began to look for an airier, and greener lifestyle in nature. Initially in the popularized cities in the late-20th century, first innovative housing models resurfaced on the urban agenda in the context of climate-change concerns, green architecture, and sustainable design. While architectural and urban planning changes have historically revolved around innovative housing models driven by sustainability, the impact of COVID-19 prompted a renewed focus on these old models. The pandemic's effects surpassed initial expectations, became nearly permanent leading people to question old planning theories and the metropolitan life model imposed throughout the 20th century. Presently, with growing awareness of green architecture and renewed interest in historical concepts, E. Howard's garden-city model was the previous century’s phenomenal idea have recently come-back and unexpectedly regained attention following the recent pandemic. These models, widely recognized as English garden-city models in Europe, also found prevalence under different terms like <i>cité-jardins</i> in France and <i>Garten-stadts</i> in Germany. In Istanbul, the model was introduced by European, French, and Italian architects, adapting creating unique model for city, <i>cité-parc</i>, (park-city) Bosphorus-Heights by French architect-urbanist Henri Prost. According to the findings of case-study focused specifically in Istanbul, it is achieved that another unique model a healthy-city concept emerged during the pandemic as a novel derivative of E. Howard’s old garden-city model originally. Consequently, this study proves that not only come-back of the old garden-city models, but also it is possible to their adaptability within contemporary urban agendas, considering such as sustainability and pandemics.