Kings Island has invested more than $300 million in improvements since its grand opening in 1972, including the addition of new rides and attractions. A water park was added in 1989,
Action Zone Action Zone opened in 1974 as Lion Country Safari, a section of the park featuring a
monorail ride that took guests on a safari-style tour through an animal preservation. This was part of a network of other safari-style zoos also called
Lion Country Safari. It was later renamed Wild Animal Safari in 1977. In 1983, the area became known as Wild Animal Habitat and included Adventure Village, a new area within the rebranded section. Over the years, it featured rides such as
Screamin' Demon (1977–1987), the first steel looping roller coaster to run both forward and backward in the United States, and
King Cobra (1984–2001), a stand-up looping roller coaster that was the first of its kind in the world. Early in its tenure after purchasing Kings Island, Paramount unveiled
Top Gun, a suspended roller coaster from
Arrow Dynamics, in 1993. Located next to the habitat attraction, it was titled after a film of the same name and was the first ride to be added to the park with a Paramount theme.
Son of Beast opened in 2000, the second year of the area's two-year expansion. It was the tallest and fastest wooden roller coaster in the world and the first of its kind to feature a vertical loop. As a result of a number of structural issues and two accidents, the ride closed permanently in 2009 and was eventually demolished in 2012.
Adventure Port In 2023, Kings Island opened a newly themed area called Adventure Port, which introduced family rides Sol Spin and Cargo Loco. Adventure Express received some theming enhancements during the transition. The area first opened as a small subsection of Coney Mall when
Flight of Fear was introduced in 1996. It expanded in 2007 following the addition of
Firehawk and was labeled X-Base, a name only designated by a small sign in Coney Mall. Firehawk closed in 2018 and was removed prior to the 2019 season. The park began leaking clues that implied a new ride would take its place, and in August 2019, the park unveiled plans to build
Orion, the park's first
giga coaster, with park guests and press in attendance.
Coney Mall When Kings Island first opened in 1972, a section of the park was dedicated to its predecessor,
Coney Island. The area was constructed to resemble the former park's carnival-style layout and featured many of its
flat rides which were relocated, including Monster, Scrambler, and Dodgem. One of the new flagship attractions during the park's inaugural year, The Racer, is located in this section. In addition to rides, some of Coney Island's famous Ginkgo trees were transplanted, lining the middle of the walkway. The area also features game booths, arcades, and concession stands in the style of
state fairs and
traveling carnivals from the early twentieth century. Zodiac, described as a "spinning, climbing double ferris wheel", It was removed following the 1986 season and relocated to
Wonderland Sydney, where it reopened in 1989. In the 1980s, flat rides
Skylab (1986–1997) and
Zephyr were added, along with a looping roller coaster named
Vortex (1987–2019), which was the first in the world to feature six inversions. Following Paramount's acquisition of the park in 1992, Coney Mall was further expanded in 1994 with the addition of Days of Thunder, a
NASCAR-themed
motion simulator ride based on the
1990 film of the same name. A , three-minute
swing ride called
WindSeeker was added in 2011, which features two-person swing carriages that rotate around a central tower at a maximum speed of . For the 2019 season, an antique car ride called Kings Mills Antique Autos, designed to resemble the retired Les Taxis (1972–2004), returned to Coney Mall as a new attraction.
International Street At the heart of the amusement park, visitors are greeted by International Street, which lies just beyond the main entrance. As one of the park's original staples when it opened in 1972, International Street was designed by Bruce Bushman, a former
Walt Disney Imagineering layout design artist. The area's architecture and cultural themes represent Italy, Spain, Germany, and Switzerland.
Enchanted Voyage, an
Old Mill dark ride that ferried guests in unaccompanied boats along water-filled guideways, was also a primary attraction that opened with the park. It was themed as a behind-the-scenes tour of a haunted theater. In 2026, Kings Island will open
Phantom Theater: Opening Nightmare, a revival of the original Phantom Theater attraction with modern technology and interactive elements not found in the original ride. The area's main attractions include the Royal Fountain, a capable of shooting of water into the air each minute, and the signature
Eiffel Tower, a one-third scale replica of the
original which offers a view of the entire park to its guests. Grand Carousel, a classic
carousel built in 1926 and originally located at Coney Island, is another International Street attraction. Also located here is Kings Island Theater along with a variety of restaurants and souvenir shops.
Oktoberfest Oktoberfest, relating to the eponymous
German festival, opened with the park in 1972 and celebrates Cincinnati's German history. The area resembles a German town with timber-framed, German-style architecture. The Festhaus building is its central attraction, featuring live shows with several indoor eateries. Rides within Oktoberfest include a swinging
pirate ship ride called Viking Fury, which opened in 1982. Part of Oktoberfest was renovated and split off to become Adventure Port in 2023.
Planet Snoopy The area initially opened with the park in 1972 as
The Happy Land of Hanna-Barbera and was later shortened to
Hanna-Barbera Land. One of the area's flagship attractions was a junior
wooden roller coaster named
Scooby Doo, which like The Racer was designed by John C. Allen but intended for younger riders. The portion of the area that borders Rivertown became a subsection of its own called Nickelodeon Splat City when it was revamped in 1995 with the addition of a stage, water attraction, and a children's play area. In 2001, the
log ride Kings Mills Log Flume was updated with a children's theme and renamed The Wild Thornberrys River Adventure. The Rugrats Runaway Reptar
family inverted roller coaster was introduced the same year. This was an expansion into an area that was originally part of Rivertown, and the Nickelodeon-themed area was renamed
Nickelodeon Central. Hanna-Barbera Land was gradually converted to Nickelodeon themes over the next several years and was eventually renamed "Nickelodeon Universe" in 2006, incorporating Nickelodeon Central. Kings Island's Planet Snoopy was also the largest in the Cedar Fair chain until 2013, when Kings Dominion doubled the size of its Planet Snoopy section.
Camp Snoopy For the 2024 season, Kings Island expanded Planet Snoopy with the addition of a new themed subsection named
Camp Snoopy. Camp Snoopy incorporates a section of Planet Snoopy that borders Rivertown, which was formerly known as Nickelodeon Central prior to 2006.
Rivertown Rivertown is an area within the park that features a western theme depicting a town with ranch-style buildings, old wooden signs, and one of the park's most iconic attractions, the
Kings Island & Miami Valley Railroad. Originally intended to be named
Frontier Land, the area was eventually named Rivertown when it debuted with the park in 1972. The area included attractions such as Kings Mill Log Flume and Shawnee Landing, a canoe ride in a part of Rivertown known as Kenton's Cove. it remains one of the most popular wooden roller coasters in the annual Golden Ticket Awards from
Amusement Today. Other rides added over the years include a
river rafting ride called
White Water Canyon, which opened in 1985, and a heavily themed, indoor
flat ride called Tomb Raider: The Ride (later renamed The Crypt), which opened in place of Kenton's Cove Keelboat Canal in 2002. In August 2016, Kings Island revealed plans to build
Mystic Timbers a wooden roller coaster that opened in 2017. The new ride added of track bringing the park's wooden coaster total to , making it the most of any amusement park in the world.
Soak City Included with park admission, Soak City is a
water park featuring two
wave pools, several children's areas and a variety of water slides. It originally opened in 1989 as
WaterWorks and has since been expanded several times. Following Cedar Fair's acquisition of Kings Island, it was later renamed
Boomerang Bay, and all references to the film character were removed. On September 2, 2011, Kings Island announced a $10-million expansion of the water park for the 2012 season, as well as a plan to rename it
Soak City. Tropical Plunge, a seven-story water slide complex, was added for the 2016 season. In 2025 Kings Island expanded Soak City with the addition of RiverRacers and Splash River Junction, a dual-racing water coaster and a new children's water play area respectively. ==Seasonal events==