City Hall Park is both a recognizable civic park and a concealed point of access to the underground systems beneath New York City. Its importance emerges when Vasiliy Fet uses the park’s ecology and abandoned transit infrastructure to infer where the returning vampires have gone, transforming a familiar public space into a threshold between daylight society and the hidden lair network.

Setting and Surface Ecology

Fet identifies the park as one of the largest rat nests in the city. Earlier efforts to remove its ivy and replace its garbage containers had failed because the rats were not dependent on a single food source. They could find food almost anywhere; what they truly sought was infrastructure. The park therefore functions less as a decorative green space than as a cover laid over an older urban system.

Fet points out that an abandoned subway station lies beneath the park: the old City Hall station. This detail gives the park a vertical geography. Above ground, people pass through a public landscape; below ground, disused tracks and tunnels provide routes invisible to ordinary pedestrians. The park’s rats understand and exploit that buried structure before the human investigators do.

Rats as Environmental Evidence

The park belongs to a wider pattern of abnormal animal movement. Rats are seen clawing up through gaps in cobblestones, emerging from underground in groups of two and three. Their collapsible skeletons allow them to pass through openings roughly three-quarters of an inch wide, and the adult animals measure about eight to ten inches in body length, with tails approximately doubling that length. Their daytime surface activity is described as practically unheard of and associated with upheaval such as an earthquake or building collapse.

Fet later brings four dead rodents to Ephraim Goodweather and Nora Martinez as physical evidence. He stresses that these rats are not appearing in the streets to die; they are alive, hungry, desperate, and displaced. In his judgment, a major change in rat ecology signals that something dangerous is approaching. City Hall Park gives this warning a concrete urban location: the animals’ behavior is a map of pressure building beneath the city.

The Search for the Underground Route

When Ephraim Goodweather, Abraham Setrakian, and Fet seek a way to track the vampires before sunrise, Setrakian argues that the creatures must be nearby and preparing to return to their lair. Fet responds by applying the logic of vermin rather than the habits of people. He has never seen a rat enter through a front door, so he looks for an indirect route instead of an obvious entrance.

He drives north on Church Street to City Hall, one block northeast of the World Trade Center site, and parks on Park Row beside the large surrounding park. The choice is tactical rather than incidental. Fet knows the park’s rat population, knows that the old City Hall station remains beneath it, and understands that the abandoned transit network may connect the surface city to hidden spaces. The park becomes the answer to a problem that conventional street-level surveillance cannot solve.

Convergence and Discovery

Using a heat scope, Setrakian and Ephraim see bright red forms moving stealthily through the otherwise cool landscape. The shapes are everywhere, and they rapidly converge toward a point to the north. Their destination proves to be a kiosk on the Broadway side of the park, a dark structure that is difficult to identify from a distance.

After the number of returning vampires declines and the heat scope detects no other significant sources, the group runs to the structure. In the growing light, the kiosk proves to be an information booth kept shuttered overnight. Inside are tourist fliers and tour-bus schedules, the ordinary paper signs of public commerce. Beneath that mundane counter, however, Fet finds twin metal doors in the floor. The doors bear the lettering MTA, have thick eye-holes at either end, and stand open without their padlocks. The discovery confirms that the park’s civic surface conceals an operational entrance into the city’s underground transit spaces.

Narrative Significance

City Hall Park concentrates the book’s connection between animal behavior, infrastructure, and the vampire outbreak. Cats gathered around an ancient wooden box at the airport, dogs register threats within a domestic enclosure, and rats become the most reliable early-warning system for disturbances below the streets. In City Hall Park, that animal knowledge is converted into human strategy: Fet reads the rats’ preferred habitat and uses it to locate the vampires’ route.

The park also embodies the collapse of ordinary distinctions between public and hidden space. Its surface remains associated with sunlight, pedestrians, food, and municipal life, while its abandoned station provides access to darkness, pursuit, and return. The information kiosk makes the contrast especially sharp: a structure devoted to guiding tourists stands over a passage used by creatures moving through a city that its human inhabitants can no longer fully see. City Hall Park is therefore not merely a location on the search route; it is the point where New York City’s visible infrastructure reveals the concealed geography of the outbreak.