במדבר, פרק ל״ה, פסוק ב׳

The Tribe of Levi was set apart from the rest of the nation and did not receive an agricultural inheritance in the Land of Israel. Yet, like all people, they required a proper place to live. To address this, a system of urban and environmental planning was established specifically for the Levites, balancing their lack of inherited land with their basic human needs.

The Israelites were urged to act quickly in providing these areas, as giving up portions of their private land to the Levites could easily be perceived as a personal loss [העמק דבר]. Therefore, this transfer of property was meant to be given as an act of loving-kindness, reflecting the broader communal responsibility to support those without the means to support themselves [אור החיים]. Allocating dedicated cities for a distinct societal class, such as priests or military personnel, was actually a recognized practice in the ancient world [אם למקרא]. Even without vast agricultural territories, a proper home remains a fundamental human necessity [בכור שור, חזקוני]. Furthermore, these cities had to be fundamentally suitable and fitting for human habitation from the start [אור החיים]. Because the Levites relied on tithes from the nation for their livelihood, they did not need massive tracts of fields and vineyards. Consequently, the cities assigned to them were generally medium in size [רלב״ג].

Alongside the residential areas, the Israelites were required to provide an open, empty space surrounding each city [רש״י, רמב״ן, רבנו בחיי, ביאור שטיינזלץ]. If a designated city lacked a natural open area, the Israelites had an active obligation to create and allocate one for them [העמק דבר]. These surrounding spaces were given to the Levites as their absolute property, just like the cities themselves [רש״ר הירש].

The primary approach among commentators is that this open space was intended primarily to enhance the city's beauty and to provide room for the Levites' animals, property, and livestock. Strict zoning laws governed this land: it was absolutely forbidden to build houses, plant vineyards, or sow crops there. The space was carefully divided based on precise measurements. The first thousand cubits immediately outside the city limits were kept entirely empty for beauty. The outer thousand cubits were then designated for fields and vineyards, though the entire surrounding area fell under the same general category of open space [רמב״ן בשם רבותינו ורש״י]. [רמב״ן] adds that this layout involved precise engineering. The city was positioned at the center of a square, with the open areas measured outward equally in all directions, forming a perfectly symmetrical estate.

These regulations for the Levite cities had a profound impact on the environment and the character of the community. The strict prohibition against building and planting in the immediate open space created an unbreakable green belt around the city, effectively preventing urban sprawl. Consequently, when the population grew, a city could not simply expand into its surrounding open areas; instead, entirely new cities had to be established. This urban planning maintained a strict ecological balance and preserved the unique character of the population [ברכת אשר על התורה].