How Elevators Transformed Urban Architecture and City Life

The Showman Who Cut the Rope

At the 1854 Crystal Palace exhibition in New York, a bearded man named Elisha Graves Otis stood on a platform hoisted high above the crowd. He ordered his assistant to cut the only rope holding the platform aloft. The audience gasped. The platform dropped a few inches, then stopped. Otis's spring-loaded safety brake—a ratchet mechanism that engaged guide rails when tension was lost—caught the load instantly. "All safe, gentlemen," Otis announced. That theatrical demonstration solved the problem that had made lifting platforms death traps for centuries, and it set in motion a transformation of every city skyline on Earth.

Before the Safety Brake: A History of Falling

Hoisting platforms existed long before Otis. The Romans used human-powered lifts in the Colosseum to raise animals and gladiators to the arena floor. Medieval monasteries hauled supplies up cliff faces with rope-and-pulley systems. By the early 1800s, steam-powered freight hoists moved goods in factories and warehouses. But nobody trusted them with people. The ropes frayed. The platforms fell. Workers died regularly.

• The Colosseum's hypogeum contained 28 elevator platforms operated by slaves turning capstans
• King Louis XV had a "flying chair" installed at Versailles in 1743—a personal lift operated by servants pulling counterweights
• Early industrial hoists used hemp rope that degraded rapidly under load and heat
• Otis sold his first safety elevator in 1857 to a New York department store—it carried passengers at a stately 40 feet per minute

Hydraulic to Electric: The Technology Leaps

Otis's first elevators used steam power. The 1870s brought hydraulic elevators, pushed upward by water pressure in a cylinder below the cab. Hydraulic systems were smooth and powerful but limited by the depth of the piston shaft—a 20-story building needed a 20-story hole beneath it. This physical constraint capped building heights.

The electric traction elevator, introduced by Werner von Siemens in 1880 and refined by Otis in the 1890s, removed that limit entirely. An electric motor turned a sheave wheel at the top of the shaft, moving steel cables attached to the cab and a counterweight. The counterweight—typically weighing as much as the cab plus 40% of its maximum passenger load—balanced the system so the motor only had to move the difference.

The elevators in Shanghai Tower, the world's second-tallest building, travel at 20.5 meters per second—73.8 kilometers per hour. Passengers ascend 121 floors in under a minute.

Enabling the Skyscraper

Before the safety elevator, buildings rarely exceeded five or six stories. The reason was biological, not structural: nobody would climb more than five flights of stairs daily. Upper floors were cheap, reserved for servants and the poor. Ground floors commanded premium rents. The elevator inverted this entirely.

The Home Insurance Building in Chicago (1885), often cited as the first skyscraper, rose to 10 stories on a steel frame with elevator access. Within a decade, buildings shot past 20 stories. The Woolworth Building (1913) reached 57 floors. The Empire State Building (1931) hit 102. None of these would have been commercially viable without reliable, fast, safe passenger elevators.

• The Empire State Building has 73 elevators serving 102 floors
• Burj Khalifa contains 57 elevators—the fastest travel at 10 m/s
• Elevator shafts typically consume 25-30% of a skyscraper's core floor area
• A 50-story building without elevators would have virtually zero occupancy above the 6th floor

Social Inversion: The Penthouse Premium

The elevator didn't just change architecture. It reorganized social class within buildings. In pre-elevator Paris, the wealthy occupied the first and second floors (piano nobile). Servants, students, and artists climbed to cramped garret rooms under the roof. The higher you lived, the lower your status.

Elevators reversed the hierarchy permanently. Height became a luxury. Penthouses—the uppermost floors—became the most expensive real estate in the building. Views, sunlight, quiet, and prestige all increased with altitude. In Manhattan today, the price per square foot can double between the 10th and 50th floors of the same building.

Destination Dispatch: Algorithms Replace Buttons

Traditional elevator systems respond to up/down calls without knowing where passengers are going. This creates inefficiency—a car stops at every requested floor, collecting passengers headed in conflicting directions. Destination dispatch, pioneered by Schindler in the 1990s, asks passengers to input their floor before boarding. An algorithm groups passengers heading to nearby floors into the same car, reducing average travel time by 30-40% and energy consumption by up to 25%.

The underlying mathematics draws on combinatorial optimization. The system must assign arriving passengers to elevators while minimizing total wait time, total travel time, and energy use—simultaneously. Machine learning models now predict traffic patterns based on time of day, building occupancy sensors, and historical data.

• Morning rush typically generates 80% up-traffic, requiring different algorithms than lunchtime bidirectional flow
• Destination dispatch reduces the number of elevator stops per trip by 50% on average
• The system improves with building size—a 60-story tower benefits far more than a 10-story building
• Accessibility concerns have been raised because the systems can be confusing for visually impaired users unfamiliar with the interface

Thyssenkrupp MULTI: Elevators Without Ropes

In 2017, Thyssenkrupp unveiled MULTI, the first ropeless elevator system using linear motor technology—essentially magnetic levitation applied vertically. Instead of a cable pulling a single cab up and down a single shaft, MULTI moves multiple independent cabins through a loop of vertical and horizontal shafts. Cabins can travel up in one shaft, move horizontally to another shaft, and descend—like a paternoster on electromagnetic rails.

The implications are significant. Rope-based elevators are limited to roughly 500 meters of vertical travel because the cable's own weight becomes unmanageable. MULTI has no such limit. Multiple cabins per shaft increase throughput by up to 50% while reducing shaft footprint by the same proportion—freeing valuable floor space for tenants.

Twelve Billion Rides and Counting

Americans take an estimated 12 billion elevator rides per year. Globally, the number likely exceeds 100 billion. Elevators are statistically among the safest forms of transportation—approximately 27 deaths per year in the United States, mostly involving maintenance workers, compared to roughly 43,000 annual traffic fatalities. The safety systems Otis demonstrated in 1854 have been refined but never fundamentally replaced: multiple steel cables (any one of which can hold the full load), electromagnetic brakes, governors that trigger if speed exceeds safe limits, and shock absorbers at the shaft bottom.

The elevator is invisible infrastructure. People rarely think about it. But remove it, and the modern city collapses to six stories—no financial districts, no apartment towers, no hospitals above the ground floor. Elisha Otis didn't just invent a machine. He made the vertical city possible.