Seattle Public Library

The Seattle Central Library is the flagship library of the Seattle Public Library system. The 11-story (185 feet or 56.9 meters high) glass and steel building in downtown Seattle, Washington was opened to the public on May 23, 2004. Rem Koolhaas and Joshua Prince-Ramus of OMA/LMN were the principal architects, and Magnusson Klemencic Associates was the structural engineer with Arup. Arup also provided mechanical, electrical, and plumbing engineering, as well as fire/life safety, security, IT and communications, and audio visual consulting. Hoffman Construction Company of Portland, Oregon, was the general contractor. The 362,987 square feet (33,722.6 m2) public library has the capacity to hold about one and a half million books and other materials. It offers underground public parking for 143 vehicles and over 400 computers accessible to the public. Over two million people visited the library during its first year. It is the third Seattle Central Library building to be located on the same site at 1000 Fourth Avenue, the block bounded by Fourth and Fifth Avenues and Madison and Spring Streets. The library has a unique, striking appearance, consisting of several discrete "floating platforms" seemingly wrapped in a large steel net around glass skin. Architectural tours of the building began in June 2004. In 2007, the building was voted #108 on the American Institute of Architects' list of Americans' 150 favorite structures in the U.S. It was one of two places in Seattle to be included on the list of 150 structures, the other being T-Mobile Park.

Fountain of Wisdom is a fountain and sculpture by George Tsutakawa, installed out the Seattle Central Library, in the U.S. state of Washington.

The YWCA Building is a historic building in Seattle, in the U.S. state of Washington. The structure is listed on the National Register of Historic Places and has been designated a Seattle landmark.

901 Fifth Avenue is a 163.38 m (536.0 ft) skyscraper in downtown Seattle, Washington. It was completed in 1973 and has 42 floors. It is the 11th tallest building in Seattle, and was designed by John Graham and Associates. The building was opened as the Bank of California Building. Flood lights illuminate all sides of the tower at night. It was renovated in 2007 and achieved LEED Certified Silver status, which is rare for preexisting buildings. Formerly the Union Bank of California Building, the name was changed to 901 Fifth Avenue following the sale by Beacon Capital Partners to Kennedy Wilson Inc. of Beverly Hills. From its opening in 1973 to July 2007 the building address was 900 Fourth Avenue. In 2016, the building was purchased by Schnitzer West, developer of the nearby Madison Centre, and Investcorp for $223.3 million. The lobby was renovated in 2017 at a cost of $4.6 million to prepare for another sale. The Vanbarton Group purchased the building for $305 million in 2019. Its largest tenants are Cray and PitchBook Data; at its base on the west side is a Bartell Drugs store.

The Crowne Plaza Seattle-Downtown is a 34-story hotel in downtown Seattle, in the U.S. state of Washington.

The William Kenzo Nakamura United States Courthouse is a federal courthouse in Seattle, Washington primarily used by the United States Court of Appeals for the Ninth Circuit. Built in 1940 as the United States Courthouse to consolidate federal agencies within the city, it was renamed for Medal of Honor recipient William K. Nakamura in 2001. The Ninth Circuit started using the building in the 1970s and became the principal tenant in 2004 when most other users moved to the new 23-story United States Courthouse in the Denny Triangle. The 10-story Art Deco building at 1010 Fifth Avenue houses 5 courtrooms and is one of four regular meeting places for the Ninth Circuit, where appeals from northern Districts are heard. With a mix of Neoclassical and modern abstract features, the Nakamura Courthouse overlooks a large sloping lawn (landscaped with a large central walkway, planters, hedges, and oak trees) which has become one of the more significant public green spaces in downtown Seattle.

Forterra (formerly Cascade Land Conservancy), based in Seattle, Washington, US, is the state of Washington’s largest land conservation, stewardship and community building organization dedicated solely to the region. Currently, Forterra operates in multiple counties. Principal offices are in Seattle, Roslyn, and Tacoma.

The Seattle Ice Arena was a 4,000-seat multi-purpose arena in Seattle, Washington, United States. It was home to the Seattle Metropolitans Pacific Coast Hockey Association franchise from 1915 to 1924. Built in 1915 at the cost of $100,000, the Ice Arena was located in downtown Seattle east of what is now the Olympic Hotel on University Street. It was developed as part of the University of Washington-owned University Tract by the Metropolitan Building Company, and was designed in a style compatible to other buildings nearby. On March 26, 1917, the Metropolitans defeated the Montreal Canadiens at the arena, becoming the first American team to win the Stanley Cup. The arena was briefly a roller rink and was remodeled into a parking garage for the Olympic Hotel shortly after the 1924–25 season. It was torn down in 1963 to make way for the IBM Building.

1200 Fifth, formerly the IBM Building, is a 20-story office building in the Metropolitan Tract, part of downtown Seattle, Washington. The building was designed by Minoru Yamasaki, who also was architect of Rainier Tower on the corner diagonally opposite, and the World Trade Center in New York City. Construction on the building began in May 1963 and it was completed in October 1964.Nard Jones wrote in 1972 that "There is an architectural poetry about [the building] that is at variance with the endless jibes at computerization and the alleged sober pragmatism of IBM personnel." The building's crown has a series of 191 "fins" that measure 23 feet (7.0 m) tall and surround the machinery floors.The corner of the complex at 5th Avenue and University Street was the site of the Seattle Ice Arena from 1915 to 1963.

The Fourth and Madison Building (formerly the IDX Tower) is a 40-story skyscraper in downtown Seattle, Washington. The building is located at 925 Fourth Avenue, at the intersection with Madison Street. Upon its completion in 2002, the late-modernist highrise was Seattle's first building to exceed 500 ft (150 m) in over a decade. In 2007, Fourth and Madison was awarded the BOMA International Office Building of the Year Award in the 500,000–1,000,000 sq ft (46,000–93,000 m2) category.The rooftop garden on the seventh floor is a privately owned public open space (POPOS).Construction of the foundation required shoring around the Great Northern Tunnel and Downtown Seattle Transit Tunnel. The tower also cantilevers 12 feet (3.7 m) over the Downtown YMCA.

Safeco Plaza (formerly known as 1001 Fourth Avenue Plaza, the Seafirst Building, and the Seattle-First National Bank Building) is a 50-story skyscraper in Downtown Seattle, Washington, United States. Designed by the Naramore, Bain, Brady, and Johanson (NBBJ) firm, it was completed in 1969 by the Howard S. Wright Construction Company for Seattle First National Bank (later known as Seafirst Bank), which relocated from its previous headquarters at the nearby Dexter Horton Building.Standing at a height of 630 feet (190 m), Safeco Plaza was the tallest building (and structure) in Seattle upon completion. It dwarfed Smith Tower, which had been the tallest building since 1914, and edged out the Space Needle, the tallest structure since 1962, by 25 ft (7.6 m); the latter led locals to refer to the building as "The Box the Space Needle Came In". The building was surpassed by the Columbia Center in 1984; as of 2022, it is the seventh-tallest building in Seattle. The building served as the headquarters of Seafirst until the bank moved into the Columbia Center upon its opening in 1985; in 2006, it became the headquarters of Safeco Insurance, which relocated from its previous headquarters in the University District.

Madison Centre (formerly known as M5 Commerce Centre and 505 Madison) is a 530-foot-tall (160 m) skyscraper in Downtown Seattle, Washington. It was completed in October 2017 and has 37 floors of office space totaling 746,000 square feet (69,300 m2) of gross leasable area. It is the thirteenth-tallest building in Seattle. It is located at the intersection of 5th Avenue and Madison Street in Downtown Seattle, adjacent to the Seattle Central Library and William Kenzo Nakamura United States Courthouse.