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The Key West Lighthouse on Whitehead Street replaced a tower destroyed by the 1846 hurricane and first shone in 1848; it was raised by 20 feet in 1894 and decommissioned in 1969. The Key West Art and Historical Society runs it as a museum: visitors climb 88 steps to the top and see the keepers' quarters with their belongings.

The Key West Butterfly and Nature Conservatory at the south end of Duval Street opened in 2003. A glass-domed tropical habitat holds 50 to 60 species of butterflies flying freely among flowering plants, waterfalls and small birds such as finches and a pair of flamingos, with a learning centre on butterfly biology.

The Southernmost Point Buoy is a painted concrete marker at the corner of South and Whitehead Streets in Key West, set up by the city in 1983. About 3.7 metres tall, it carries the words '90 miles to Cuba' and marks a point long called the southernmost in the continental United States, though a beach nearby lies farther south.

Fort Zachary Taylor Historic State Park lies at the south-western tip of Key West. Its brick fort, begun in 1845 and named after President Zachary Taylor, stayed in Union hands during the Civil War and is a National Historic Landmark. Guides lead fort tours, and the park's beach is used for swimming, snorkelling and picnics.

Frontier City is a Western-themed amusement park on the northern edge of Oklahoma City, opened in 1958 and now operated by Six Flags. Its streets are laid out like an Old West town, with roller coasters such as the Silver Bullet and the wooden Wildcat, family rides, live shows and a water park area.

The First Americans Museum, opened in 2021 beside the Oklahoma River, presents the histories and cultures of the 39 tribal nations in Oklahoma today. Its galleries cover their removal to Indian Territory, everyday objects and contemporary life, with a gallery of loans from the Smithsonian's National Museum of the American Indian, around a large earthwork mound.

The Oklahoma History Center, opened in 2005 opposite the Governor's Mansion near the State Capitol, is the state history museum run by the Oklahoma Historical Society. Its galleries cover the tribal nations, settlement, oil, aviation and commerce of Oklahoma, and the grounds hold oil-industry equipment and a research centre.

The Oklahoma State Capitol houses the state legislature and the governor's office. Built in neoclassical style between 1914 and 1917, it received its dome only in 2002; inside, murals and paintings tell the state's history. Its grounds are the only state capitol grounds in the United States with working oil wells.

The American Banjo Museum in the Bricktown district traces the history of the banjo, from its African roots and arrival in North America with enslaved people to jazz, bluegrass and today's music. Founded in Guthrie in 1988 and moved to Oklahoma City in 2009, it shows hundreds of instruments in a restored brick warehouse.

The Oklahoma City National Memorial honours the 168 people killed, the survivors and the rescuers of the bombing of the Alfred P. Murrah Federal Building on 19 April 1995. On the building's site, the outdoor memorial has a reflecting pool between two gates and a field of empty chairs; the museum beside it documents the attack and its aftermath.

The Myriad Botanical Gardens cover six hectares in downtown Oklahoma City, with lawns, themed beds, a lake and a children's garden around the Crystal Bridge Conservatory, a glass tube that holds tropical plants from wet and dry climates. The outdoor grounds are open to everyone; the conservatory has its own admission.

The Oklahoma City Museum of Art occupies the Donald W. Reynolds Visual Arts Center in the downtown arts district. It shows its own collection of European and American art alongside travelling exhibitions, and holds a large collection of glass by Dale Chihuly, including a 17-metre glass tower in the atrium. A cinema shows independent and classic films.

The Dallas Arboretum and Botanical Garden covers 66 acres on the south-eastern shore of White Rock Lake in East Dallas and opened in 1984. It has 19 named gardens, among them A Woman's Garden and the Rory Meyers Children's Adventure Garden, and includes the DeGolyer House, a Spanish Colonial Revival estate of 1939, and the 1938 Camp House.

The George W. Bush Presidential Center holds the library and museum of George W. Bush, the 43rd US president, on the Southern Methodist University campus in University Park, within Dallas. Opened in 2013, the museum has a replica Oval Office, an exhibit on 11 September 2001 and the Decision Points Theater, beside a 15-acre native Texas park.

The Nasher Sculpture Center is a museum of modern and contemporary sculpture in the Dallas Arts District, opened in 2003 next to the Dallas Museum of Art. Renzo Piano designed its stone and glass galleries and Peter Walker the garden; the Raymond and Patsy Nasher collection includes works by Rodin, Matisse, Picasso, Giacometti, Calder and Henry Moore.

The Dallas Museum of Art is an art museum in the Dallas Arts District, housed since 1984 in a limestone building by Edward Larrabee Barnes after the museum left Fair Park. Its collection of more than 24,000 objects runs from the third millennium BC to the present day, and its research library holds over 50,000 volumes.

The Perot Museum of Nature and Science is a natural history and science museum in Victory Park, Dallas, named after Margot and Ross Perot and opened here in December 2012. Thom Mayne of Morphosis designed the building as a large cube over a planted base, with an escalator in a glass tube outside; it has 11 permanent exhibit halls, including a children's museum.

The Dallas World Aquarium is an aquarium and zoo in the West End Historic District of Dallas, opened in 1992 in a gutted 1924 warehouse. Visitors walk down through Orinoco, a recreated South American rainforest with birds, primates and manatees, the Mundo Maya hall with a shark tunnel, the Cloud Forest Trek and saltwater tanks from around the world.

The Sixth Floor Museum is in the former Texas School Book Depository, a 1901 brick warehouse on Dealey Plaza in Dallas, from whose sixth floor President John F. Kennedy was shot on 22 November 1963. Opened in 1989, its main exhibition uses films, photographs and objects to document his presidency, the assassination and the investigations that followed.

Dealey Plaza is a city park in the West End Historic District of downtown Dallas, named after the newspaper publisher George Dealey and sometimes called the birthplace of Dallas. President John F. Kennedy was assassinated here on 22 November 1963 as his motorcade passed along Elm Street; the plaza and the surrounding buildings form a National Historic Landmark district.