New Delhi is a massive, chaotic, and deeply historic capital. Tourists must be highly vigilant regarding scams; the 'fake tourist office' and 'hotel is closed' taxi scams are ubiquitous around the airport and New Delhi Railway Station. Female travelers should dress conservatively (covering shoulders and knees) to avoid unwanted attention and should strictly avoid walking alone or taking unverified transport late at night; use apps like Uber or Ola instead. Health is a major concern: never drink tap water, avoid raw street food to prevent severe gastrointestinal illness, and be aware that between November and February, Delhi suffers from some of the most hazardous, extreme air pollution (smog) in the world, requiring N95 masks.