The City That Never Sleeps is a ubiquitously used nickname for New York City that was popularized by Frank Sinatra in the song Theme from New York, New York:

• I want to wake up in a city that never sleeps
  And find I'm a number one, top of the list ...^[1]

Although New York City is the most prominently recognized city termed "The City That Never Sleeps",^[2][3] and the city's subway system never closes,^[4] the term has been applied to other cities. Below is a list, in alphabetical order, of cities that have also been called "the city that never sleeps":^[5][4]

• Barcelona^[6]
• Berlin^[7]
• Beirut^[8][9]
• Buenos Aires^{[10][11][12][13]}
• Cairo^[14]
• Mecca
• Chicago, in the film City That Never Sleeps
• Dhaka^[15]
• Dubai^{[16][17][18][19]}
• Karachi^[20]
• Lagos^[21]
• Las Vegas^[3]
• London^[22]
• Madrid^[23]
• Madurai^[24]
• Manila^[25][26]
• Moscow^[27]
• Mumbai^[28]
• Rio de Janeiro^[29]
• São Paulo^[30]
• Shanghai^[31][32]
• Valencia^[33]

Other 24/7 services

In many "24-hour" cities plenty of eateries are open until 3 am, several clubs are open until 6 am^[3] and bars close 2 am^[4] or a few hours later.

Due to the COVID-19 pandemic, many 24-hour and late-night establishments have begun closing earlier. Coffee shops in lower Manhattan, in particular, began to close at 9:30 pm, whereas before the pandemic they had frequently closed at 12:30 am.^[34]

The people who make use of these facilities, studies have found, are nevertheless affected by sunrise and sunset.^[35][36] In other words: "that most humans aren’t as influenced by Earth’s light-dark cycle as we used to be" is not fully supported; there is an observed annual shift for "a stretch of three or four months" and "then, the process reversed direction".^[37]