Many of these no-fly zones are established for reasons such as religious sanctity, historical importance, political security, or environmental preservation.
The official residence of the UK Prime Minister is in a no-fly zone. Special permission is required to walk on the street, and planes are completely banned from flying over it. Similarly, Buckingham Palace, Windsor Castle, and the Parliament building are also under this restriction.
The U.S. capital has been a no-fly zone since the 9/11 attacks. Any aircraft passing through the Air Defense Identification Zone (ADIZ) must identify themselves. In 2005, an F-16 had to issue a warning to a Cessna 150 flying too close to the White House.
Aircraft cannot fly over Disney World in Florida and Disneyland in California within a 3,000-foot radius. Initially a temporary ban, it became permanent in 2003.
This ancient Inca city in Peru, one of the New Seven Wonders of the World, is protected as a historical sanctuary. Aircraft are prohibited from flying over it due to its cultural significance.
The holiest city for Muslims, Mecca, is a no-fly zone. Planes are not allowed to fly over the Kaaba, and only Muslims are allowed to enter the city. Violations of this rule can result in heavy penalties for pilots or passengers.