Three funicular lines carved into Naples' hillside have carried passengers since the late nineteenth century, when Neapolitan engineers solved the city's vertical geography with cable-drawn cars. The Centrale, Chiaia, and Montesanto funiculars still climb gradients of up to forty percent, connecting the medieval streets of the historic center to the residential plateau of Vomero, two hundred meters above sea level. Passengers ascend through tunnels drilled into tuff rock, emerging onto a terrace district where the entire Bay of Naples unfolds — Vesuvius to the east, Capri's limestone cliffs on the southern horizon, Posillipo's green promontory curving west. Vomero's strategic elevation made it a military observation point for centuries before urban expansion reached the hilltop in the 1880s. The Certosa di San Martino, a fourteenth-century Carthusian monastery, occupies the highest ground; its baroque cloister and museum of Neapolitan history anchor the quarter today. Adjacent Castel Sant'Elmo, a star-shaped fortress completed in 1537, controlled maritime traffic through the Tyrrhenian Sea for four hundred years. Both structures offer open-air ramparts where the city's layered topography becomes legible — the Roman grid of Spaccanapoli cutting through medieval alleys, the nineteenth-century boulevards of Chiaia stretching toward the harbor, the industrial cranes of the eastern docks marking the city's working waterfront. A Naples panoramic walking tour links these elevated viewpoints with the street-level texture of the historic center, where laundry lines span balconies and basalt paving stones record five centuries of foot traffic. The walk typically begins in Piazza del Plebiscito, whose neoclassical colonnade frames the Royal Palace, then ascends via funicular to Vomero's belvederes. Guides trace the city's expansion from Greek Neapolis through Spanish viceregal rule to modern industrial port, using the shifting panorama as a chronological map. The route descends through Villa Floridiana's terraced gardens, where umbrella pines and citrus groves provide shade, before returning to sea level near the Chiaia marina. October's mild temperatures and diagonal autumn light make this a favored season for hilltop walks. The bay's haze clears after September's humidity, sharpening the view of Vesuvius' double crater and the Sorrento peninsula's cliff line. Morning departures capture the city before midday crowds fill the funicular cars, while late-afternoon tours benefit from golden hour illumination across the water.