The CN Tower is a 553.3 m-high communications and observation tower in Toronto, Ontario, Canada. Completed in 1976, it is located in downtown Toronto, built on the former Railway Lands. Its name "CN" referred to Canadian National, the railway company that built the tower.

The Biosphere, also known as the Montreal Biosphere (French: Biosphère de Montréal), is a museum dedicated to the environment in Montreal, Quebec, Canada. It is housed in the former United States pavilion constructed for Expo 67 located within the grounds of Parc Jean-Drapeau on Saint Helen's Island. The museum's geodesic dome was designed by Buckminster Fuller.

The Museum of Modern Art (MoMA) is an art museum located in Midtown Manhattan, New York City, on 53rd Street between Fifth and Sixth Avenues. Considered one of the most influential museums in the world devoted to modern and contemporary art, MoMA's collection spans the late 19th century to the present, and includes over 200,000 works of architecture and design, drawing, painting, sculpture, photography, prints, illustrated and artist's books, film, as well as electronic media. In 2023, MoMA was visited by over 2.8 million people, making it the 15th most-visited art museum in the world and the 6th most-visited museum in the United States.

The Bronx Zoo (also historically the Bronx Zoological Park and the Bronx Zoological Gardens) is a zoo within Bronx Park in the Bronx, New York City. It is one of the largest zoos in the United States by area and is the largest metropolitan zoo in the United States by area, comprising 265 acres (107 ha) of park lands and naturalistic habitats separated by the Bronx River. On average, the zoo has 2.15 million visitors each year as of 2009. The zoo's original permanent buildings, known as Astor Court, were designed as a series of Beaux-Arts pavilions grouped around the large circular sea lion pool. The Rainey Memorial Gates were designed by sculptor Paul Manship in 1934 and listed on the National Register of Historic Places in 1972.