In Europe there is no general law to restrict the height of structures. However, there are height restriction laws in many cities, often intended to protect views of historic centers.

In Athens, buildings cannot exceed twelve floors so as not to block the view of the Parthenon.[6] However, there are several exceptions, such as the Athens Tower "Athens Tower (Greece)"), which exceed that number of floors. This is because they were built far from the center or during periods of political instability. The Atenas Tower is the tallest building in the city with 103 meters high and 25 floors.

In the central area of ​​Rome, delimited by the Aurelian walls, no building can exceed the height of the dome of St. Peter's Basilica, 136 meters. A skyscraper called Eurosky Tower built in 2012 in the EUR neighborhood, outside the Aurelian walls, exceeds this limit at 155 meters high and is the tallest building in the city.

The Hungarian government is introducing a new ban on skyscrapers in hopes of preserving Budapest's skyline. Gergely Gulyás"), Minister in the Prime Minister's Office, recently stated that the ban will affect all new buildings in Budapest over 90 meters high, although the measure will not affect a 120-meter tower that will be exempt because it previously won planning permission.[7]

However, there is a height restriction for new onshore wind turbines in the European Union, which limits their total height to 200 metres.[8]​.

Canada

Canada does not have national height laws, but many cities have bylaws that limit the height of buildings and the national aviation authority (Transport Canada) restricts the construction of structures near airports. Some examples:

• - Montreal: Until the late 1920s, all buildings were limited to ten floors. Currently, buildings are limited to a height of 200 meters and are subject to not contrasting the view of Mount Royal, the city's most important green space, with the sole exception of antennas and communications towers, which can reach 223 meters above sea level. In Downtown Montreal there is currently only one building over 200 metres, 1000 De La Gauchetière, which was built as a special project in 1992.

• - Ottawa-Gatineau: Until 1973, buildings in Downtown Ottawa") were limited to 45.5 m so that the Peace Tower"), part of the parliament buildings, could dominate the skyline.[9]​.

• - Saskatoon: Continues to limit building heights to a maximum of 76 meters due to a skyway running through the city centre.[10]​ However, the recent proposal for a 90 - 100 meter tower could lead to this limit being raised.[11]​.

• - Vancouver: maintains "vision corridors" that protect views of the North Shore Mountains").[12]​ It also allows developers to exceed the maximum height in exchange for preserving historic buildings.

• - Whitehorse: No building can be more than four stories due to the nearby fault line. The Whitehorse Chamber of Commerce said maintaining the four-story height limit would discourage businesses from locating in the city. In 2007, the city council rejected a proposal to increase the limit to eight floors. To exceed the height limit, the developer would have to request an amendment to the city's official urban plan.[13]​.

USA

Both the Federal Aviation Administration (FAA) and the Federal Communications Commission (FCC) have a "rebuttable presumption" of not constructing any antenna higher than 2,000 feet (610 m) above ground level to prevent these structures from being a hazard to air navigation. because urbanization has increased near airports.[16]​.

There are some exceptions to height restrictions for important airport infrastructure, such as radio towers, or for structures older than the airport. These structures must be marked with red and white paint, have overhead safety lights on top, or both. Red and white paint or aerial safety lights often also have to be installed on tall structures (more than 100 m) located far from airports.

Several cities in the United States have local height limits, for example:

• - Bellevue "Bellevue (Washington)"): maximum of 137 m in Downtown Bellevue"), established in the late 1990s.[17]​.

• - Madison "Madison (Wisconsin)"): No building located within one mile (1,609 m) of the Wisconsin State Capitol may be taller than it (established 1966).[18]​[19]​.

• - San José "San José (California)"): Due to the proximity of Downtown San Jose") to the San José International Airport, no building within the city limits exceeds 91 m.

• - Portland: Height limits vary between 23 m and 140 m throughout the city, with the primary goal of protecting views of Mount Hood and the West Hills.[20]​.

• - Washington D. C.: buildings are limited to a height equal to the width of the adjacent street plus 6 m to a maximum of 27 m on residential streets, 40 m on commercial streets and 49 m on a small part of Pennsylvania Avenue "Pennsylvania Avenue (Washington D. C.)"). These height limits were approved by the United States Congress in 1889 through the Height of Buildings Act of 1899") and later modified by the Height of Buildings Act of 1910").[21]​[22]​.

• - FCC policy statement concerning tower heights near airports.

In Europe there is no general law to restrict the height of structures. However, there are height restriction laws in many cities, often intended to protect views of historic centers.

In Athens, buildings cannot exceed twelve floors so as not to block the view of the Parthenon.[6] However, there are several exceptions, such as the Athens Tower "Athens Tower (Greece)"), which exceed that number of floors. This is because they were built far from the center or during periods of political instability. The Atenas Tower is the tallest building in the city with 103 meters high and 25 floors.

In the central area of ​​Rome, delimited by the Aurelian walls, no building can exceed the height of the dome of St. Peter's Basilica, 136 meters. A skyscraper called Eurosky Tower built in 2012 in the EUR neighborhood, outside the Aurelian walls, exceeds this limit at 155 meters high and is the tallest building in the city.

The Hungarian government is introducing a new ban on skyscrapers in hopes of preserving Budapest's skyline. Gergely Gulyás"), Minister in the Prime Minister's Office, recently stated that the ban will affect all new buildings in Budapest over 90 meters high, although the measure will not affect a 120-meter tower that will be exempt because it previously won planning permission.[7]

However, there is a height restriction for new onshore wind turbines in the European Union, which limits their total height to 200 metres.[8]​.

Canada

Canada does not have national height laws, but many cities have bylaws that limit the height of buildings and the national aviation authority (Transport Canada) restricts the construction of structures near airports. Some examples:

• - Montreal: Until the late 1920s, all buildings were limited to ten floors. Currently, buildings are limited to a height of 200 meters and are subject to not contrasting the view of Mount Royal, the city's most important green space, with the sole exception of antennas and communications towers, which can reach 223 meters above sea level. In Downtown Montreal there is currently only one building over 200 metres, 1000 De La Gauchetière, which was built as a special project in 1992.

• - Ottawa-Gatineau: Until 1973, buildings in Downtown Ottawa") were limited to 45.5 m so that the Peace Tower"), part of the parliament buildings, could dominate the skyline.[9]​.

• - Saskatoon: Continues to limit building heights to a maximum of 76 meters due to a skyway running through the city centre.[10]​ However, the recent proposal for a 90 - 100 meter tower could lead to this limit being raised.[11]​.

• - Vancouver: maintains "vision corridors" that protect views of the North Shore Mountains").[12]​ It also allows developers to exceed the maximum height in exchange for preserving historic buildings.

• - Whitehorse: No building can be more than four stories due to the nearby fault line. The Whitehorse Chamber of Commerce said maintaining the four-story height limit would discourage businesses from locating in the city. In 2007, the city council rejected a proposal to increase the limit to eight floors. To exceed the height limit, the developer would have to request an amendment to the city's official urban plan.[13]​.

USA

Both the Federal Aviation Administration (FAA) and the Federal Communications Commission (FCC) have a "rebuttable presumption" of not constructing any antenna higher than 2,000 feet (610 m) above ground level to prevent these structures from being a hazard to air navigation. because urbanization has increased near airports.[16]​.

There are some exceptions to height restrictions for important airport infrastructure, such as radio towers, or for structures older than the airport. These structures must be marked with red and white paint, have overhead safety lights on top, or both. Red and white paint or aerial safety lights often also have to be installed on tall structures (more than 100 m) located far from airports.

Several cities in the United States have local height limits, for example:

• - Bellevue "Bellevue (Washington)"): maximum of 137 m in Downtown Bellevue"), established in the late 1990s.[17]​.

• - Madison "Madison (Wisconsin)"): No building located within one mile (1,609 m) of the Wisconsin State Capitol may be taller than it (established 1966).[18]​[19]​.

• - San José "San José (California)"): Due to the proximity of Downtown San Jose") to the San José International Airport, no building within the city limits exceeds 91 m.

• - Portland: Height limits vary between 23 m and 140 m throughout the city, with the primary goal of protecting views of Mount Hood and the West Hills.[20]​.

• - Washington D. C.: buildings are limited to a height equal to the width of the adjacent street plus 6 m to a maximum of 27 m on residential streets, 40 m on commercial streets and 49 m on a small part of Pennsylvania Avenue "Pennsylvania Avenue (Washington D. C.)"). These height limits were approved by the United States Congress in 1889 through the Height of Buildings Act of 1899") and later modified by the Height of Buildings Act of 1910").[21]​[22]​.

• - FCC policy statement concerning tower heights near airports.