Spreading across Arizona, USAGrand CanyonIt is a grand canyon carved by the Colorado River over millions of years, and in 1979World Natural Heritage SiteIt has been registered as a World Heritage Site. This article summarizes information to help you plan your trip, including what the Grand Canyon is, why it was registered as a World Heritage Site, its geology and highlights, and how to get there and sightseeing tips.
What is the Grand Canyon?
The Grand Canyon isNorthern Arizona, United StatesIt is a large canyon located in [location], formed by the erosion of the Colorado River and its tributaries.Grand Canyon National ParkProtected as such, it stretches approximately 446 km in length, 6 to 29 km in width, and reaches a maximum depth of about 1.6 km. With exposed geological layers dating back about 2 billion years, it is one of the world's most remarkable natural wonders, allowing visitors to witness the history of the Earth firsthand.
Basic information about the Grand Canyon
| item | Contents |
|---|---|
| Official name | Grand Canyon National Park |
| location | Northern Arizona, United States |
| scale | Total length approximately 446 km, width 6.4-29 km, maximum depth approximately 1.6 km |
| Year of World Heritage designation | 1979 |
| Main sightseeing areas | South rim, North rim |
With over 5 million visitors annually, the South Rim is open year-round and boasts excellent facilities. The North Rim, being at a higher elevation, may be closed during winter due to heavy snowfall.
The reason why the Grand Canyon became a World Heritage Site
Reasons for UNESCO registrationSo, let's go to the Grand Canyon.Criteria for registering natural heritage sitesWe evaluate these regions as having outstanding universal value that meets multiple of the following criteria.
- Criteria (vii)Possessing unparalleled natural beauty and aesthetic significance. The colors and scale of the canyon, and the views of the sunrise and sunset, are known for their unparalleled natural beauty.
- Criterion (viii)It is a remarkable example illustrating major stages in Earth's history. The exposed strata date from approximately 2 billion years ago to the Paleozoic era, making it extremely important for studying erosion processes and geological history.
- Criteria (ix)It serves as a representative example of the evolution and development of terrestrial, freshwater, and coastal ecosystems. The diverse habitats resulting from the elevation differences of the canyon demonstrate ecological processes.
- Criteria (x)This area includes habitats important for biodiversity conservation. It is home to endemic species of plants and animals, and also contains traces of prehistoric humans.
Its magnificent scenery and the comprehensive recognition of its geological, ecological, and cultural value led to its designation as a World Heritage Site.
Grand Canyon Geology and History
Reasons why canyons were formed
The formation of the Grand Canyon was primarily due toErosion of the Colorado RiverThis is due to the river eroding the rocks over a long period of time, creating deep canyons. The exposed geological layers date from the Precambrian to the Paleozoic era, and are sometimes called a "textbook" that unravels the history of the Earth.
Relationship with humankind
Indigenous people have lived in this area since ancient times, using it as a place for prayer and trade. Even today, several indigenous tribes reside in the surrounding area, maintaining cultural and spiritual ties. Efforts are being made to balance national park protection with tourism and research.
Highlights of the Grand Canyon
Differences between the South Rim and the North Rim
South RimThe southern edge is open year-round and is home to a concentration of visitor centers, accommodations, restaurants, and observation decks. It's an ideal base for first-time visitors or those accessing the area by car, bus, or plane. The elevation is approximately 2,100m, and the climate is dry.
North SlimThe North Rim is at an altitude of approximately 2,400m, is cooler than the South Rim, and is usually only open from mid-May to mid-October due to snow in winter. There are fewer tourists, making it suitable for those who want to enjoy nature in a quieter atmosphere. It takes about 4-5 hours by car from the South Rim to the North Rim (bypassing the canyon).
Must-see viewpoints and trails
On the South Rim,Mother Point(Mather Point)Yava Pai Point(Yavapai Point)Hopi pointsPopular spots include Hopi Point. It gets especially crowded during sunrise and sunset, so allow plenty of time for travel.
On a hike,Bright Angel Trail(Bright Angel Trail) andSouth Kaibab TrailThe South Kaibab Trail is well-known. Descending to the bottom of the valley requires physical fitness, proper equipment, and plenty of water. If you plan to return to the rim in a single day, it is recommended to stick to a short round trip. Take precautions against heatstroke and dehydration, and follow the park's signs.
Other activities
There are many ways to enjoy the Colorado River, including rafting, aerial tours by helicopter or small aircraft, and mule rides down the canyon. Most of these activities require advance reservations and are subject to the regulations of the operators and the park.
Access and basic information about the Grand Canyon
From Los Angeles
- carThe South Rim is approximately 450 miles (about 724 km) away, taking about 7-10 hours. There are also routes that pass through Hoover Dam and Las Vegas.
- planeThere are direct flights from Los Angeles International Airport (LAX) to Grand Canyon Airport (GCN), which take about 1.5 hours each way. After arriving, you can take a shuttle or rental car to the South Rim.
- Bus tourThere are many day trips and overnight tours available, and you can easily visit with hotel transfers and a guide.
Admission fee and visitor center
The entrance fee is set per vehicle (or per person) and is valid for 7 days. For rates and annual passes, please see **National Park Service official website**Please check the latest information (for prices and opening status as of March 2026, please check the official website).** It is recommended to check maps, weather, and trail conditions at the visitor center before exploring.
Regarding other World Heritage Sites in the United States,8 Recommended World Heritage Sites in AmericaorMesa Verde National ParkPlease also see the article.
Sightseeing tips and points to note
Season and clothing
In summer, the sun is strong and temperatures can be high even on the rim. Bring a hat, sunscreen, and plenty of water, and choose hikes of a manageable distance. In winter, there can be snow and ice on the South Rim, and the North Rim is closed. Spring and autumn are generally more pleasant, and the crowds tend to be somewhat less than in summer.
Regarding safety
Hiking into the canyon involves strenuous uphill climbs and carries risks of heatstroke and dehydration. Please follow the park's recommended rules, such as "do not descend to the bottom of the canyon on a day trip," and adjust your plan according to your physical condition.
summary
The Grand Canyon, a UNESCO World Heritage Site, is a representative American natural landscape recognized for both its "unparalleled natural beauty" and its value as a "sight of Earth's history and ecology." Enjoy the observation decks and short trails around the South Rim, and if you have time, consider the North Rim, rafting, or an aerial tour for an even more memorable trip. Check official information for entrance fees and access, and be sure to bring water, wear appropriate clothing, and plan your visit carefully for a safe and enjoyable experience.
English 
日本語
[...] Learn more about Grand Canyon National Park [...]
[...] For other World Heritage Sites in the United States, please see our list of 8 recommended World Heritage Sites in the U.S., categorized by area. Please use this list, along with sites like the Grand Canyon and Mesa Verde National Park, to help plan your trip. [...]