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Space Needle
The Space Needle flying the U.S. flag on Independence Day in 2011
Record height
Tallest in Seattle and Washington state from 1962 to 1969[I]
Preceded bySmith Tower
Surpassed bySafeco Plaza
General information
StatusComplete
TypeObservation tower
Location400 Broad Street
Seattle, Washington, U.S.
Coordinates47°37′13″N 122°20′57″W / 47.6204°N 122.3491°W / 47.6204; -122.3491 (Space Needle)Coordinates: 47°37′13″N 122°20′57″W / 47.6204°N 122.3491°W / 47.6204; -122.3491 (Space Needle)
Construction startedApril 17, 1961
CompletedDecember 8, 1961
Height
Antenna spire604 ft (184 m)
Top floor518 ft (158 m)
Technical details
Floor count6
Elevators3
Design and construction
OwnerSpace Needle Corporation
Main contractorHoward S. Wright Construction Co
ArchitectJohn Graham & Company
Structural engineerJohn K. Minasian
Victor Steinbrueck
Invalid designation
DesignatedApril 19, 1999
References

The Space Needle is a tower in Seattle, Washington. It is at the Seattle Center. The Space Needle was built for the 1962 World's Fair. During this time, almost 20,000 people used the elevators every day. Over 2.3 million visitors came to the World Fair overall. The Space Needle is 605 feet (184 m) high and 138 feet (42 m) wide. It weighs 9,550 tons. When it was completed it was the tallest building to the west of the Mississippi River. It is built not to fall in wind up to 200 miles per hour (89 m/s) and earthquakes of up to 9.1 magnitude. This gives protection against an earthquake as powerful as the 1700 Cascadia earthquake. The tower also has 25 lightning rods on its roof to protect it against lightning.

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