Buena Vista ( ) is an unincorporated community in Elizabeth Township, Allegheny County, Pennsylvania, United States, located just outside Pittsburgh on the Youghiogheny River.
 The Great Allegheny Passage rail trail runs through the community.
 Buena Vista's ZIP code is 15018.
 For a time, Buena Vista served as a mining town.
 Like many places in the USA with this name, Buena Vista was named for the 1847 Battle of Buena Vista during the Mexican-American War.
Buena Vista Park is a park in the Haight-Ashbury and Buena Vista Heights neighborhoods of San Francisco, California.
 It is the oldest official park in San Francisco, established in 1867 as Hill Park, later renamed Buena Vista.
 It is bounded by Haight Street to the north, and by Buena Vista Avenue West and Buena Vista Avenue East.
 The park is on a steep hill that peaks at 575 feet , and covers 37 acre .
 The lowest section is the north end along Haight.
Buena Vista High School was a public high school located at 3945 East Holland in Buena Vista Charter Township, Michigan and was part of the former Buena Vista School District.
 The school was closed when the Buena Vista School District was dissolved in July 2013.
 Buena Vista's mascot was the Knights, and its colors were blue and white.
 The school's athletic program competed in the Greater Thumb Conference as a Class C, and later in the Highland Conference as a Class D school.
The office of Superintendent of Public Works was created by an 1876 amendment to the New York State Constitution.
 It abolished the canal commissioners and established that the Department of Public Works execute all laws relating to canal maintenance and navigation except for those functions performed by the New York State Engineer and Surveyor who continued to prepare maps, plans and estimates for canal construction and improvement.
 The Canal Board (now consisting of the Superintendent of Public Works, the State Engineer and Surveyor, and the Commissioners of the Canal Fund) continued to handle hiring of employees and other personnel matters.
 The Barge Canal Law of 1903 (Chapter 147) directed the Canal Board to oversee the enlargement of and improvements to the Erie Canal, the Champlain Canal and the Oswego Canal.
 In 1967, the Department of Public Works was merged with other departments into the new New York State Department of Transportation.
Buena Vista is a brand name which was historically often used for divisions and subsidiaries of The Walt Disney Company, whose primary studios, the Walt Disney Studios, are located on Buena Vista Street in Burbank, California.
 (The studio lot is also home to the Company's corporate headquarters, the Team Disney Burbank building.)
 The logos for the various Buena Vista brands featured the "Buena Vista" wordmark superimposed over the Disney Castle image to signal the affiliation between Buena Vista and Disney.
 The name literally means "good view" in Spanish.
The New York State Canal Corporation is responsible for the oversight, administration and maintenance of the New York State Canal System, which consists of the Erie Canal, Cayuga–Seneca Canal, Oswego Canal and Champlain Canal.
 It is also involved with the development and maintenance of the New York State Canalway Trail and with the general development and promotion of the Erie Canal Corridor as both a tourist attraction and a working waterway.
The Oswego Canal is a canal in the New York State Canal System located in New York, United States.
 Opened in 1828, it is 23.7 miles (38.1 km) in length, and connects the Erie Canal at Three Rivers (near Liverpool) to Lake Ontario at Oswego.
 The canal has a depth of 14 ft (4.2 m), with seven locks spanning the 118 ft (36 m) change in elevation.
The New York State Canal System (formerly known as the New York State Barge Canal) is a successor to the Erie Canal and other canals within New York.
 Currently, the 525 mi system is composed of the Erie Canal, the Oswego Canal, the Cayuga–Seneca Canal, and the Champlain Canal.
 In 2014 the system was listed as a national historic district on the National Register of Historic Places in its entirety, and in 2016 it was designated a National Historic Landmark.
Buena Vista Downtown Historic District is a national historic district located at Buena Vista, Virginia.
 The district encompasses 38 contributing buildings and 1 contributing structure in the central business district of Buena Vista.
 The buildings are primarily one- and two-story masonry structures, with the earliest built in 1889-1890.
 Notable buildings include the Buena Vista Post Office (1930), Buena Vista War Memorial Building (1954), Peoples Bank of Buena Vista (1907), Dickinson Building (c. 1907), Royer’s Restaurant (c. 1940), the Advocate Building (1889), Buena Vista Masonic Building (c. 1910), and the Valley Steam Laundry Building (c. 1905).
 The Buena Vista Company Building (1890) is separately listed as the Old Courthouse.
Buena Vista Canal is an irrigation canal in Kern County, California.
 It originates from the Carrier Canal at Coffee Road.
 The canal terminates at Lake Webb (and Buena Vista Lakebed) and the Kern River.

Question: What do Oswego Canal and Buena Vista Canal have in common?
Answer: canal