When we modern folks visit a beautiful natural site, the experience may evoke a sense of peace, a feeling of awe...or just the need to snap a million photos. For our ancient forbearers, though, these places were so much more. Throughout history, civilizations all over the globe have attached spiritual or religious importance to natural spots(ie. not man-made places)that played key roles in their respective cultures. From the mythological homes of powerhouse gods like Zeus and Shiva to the serene spot where the mortal Buddha achieved enlightenment, these are the places of legends. Some are still used for age-old rituals, others have been lost to time, but all crackle with a special energy and, if you're lucky, just a little bit of leftover magic.

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Located in Australia's Red Centre, in the heart of the continent, these two natural rock formations are the main attractions in the World Heritage SiteUluru-Kata Tjuta National Park. One of the country's more recognizable landmarks, Uluru is a flat-topped sandstone rock standing about 1,100 feet high and almost six miles around, with a soulful, deep-red hue that changes throughout the day. (The site is also known as Ayers Rock, so named by the colonial surveyor who "rediscovered" the place in 1873.) About 30 miles away, Kata Tjuta (a.k.a. The Olgas) is made of more than 30 domes of varying rock types, including granite, sandstone, and basalt; the tallest point is almost 1,800 feet high. Both sites are sacred to the Anangu people of the Pitjantjatjara Aboriginal tribe, who believe the rocks were built during the ancient creation period and are still inhabited by ancestor spirits. (Archeologist work suggests there were humans in this area over 20,000 years ago.) Owned by the Anangu and leased by the government, the park is open to the public, though tribespeople continue to perform rituals and ceremonies in various locations, such as the sacred "Dreamtime" track that runs near the modern hiking trail. The park also houses a Cultural Center and Aboriginal rock art sites, and ranger guided tours are available.

Getting There:Visitors can drive or join a bus tour to the park from Alice Springs (280 miles away), or fly to Ayers Rock Airport/Connellan (AYQ); Qantas and Virgin Australia offer direct flights from several major domestic cities. There are only a few accommodation choices in the area, in different price ranges, and all are owned byVoyages Indigenous Tourism. (Camping is not allowed in the park.) Note that while hiking Uluru is not technically forbidden, the Anangu ask that visitors not climb the rock out of respect for its significance, and also ask that photos not be taken of certain sacred sites. Guests should also not pocket any rocks as souvenirsthose who have say it brings bad luck, and often mail the rocks back to the park. Admission is $25 for a three-day pass.

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The ancient Maya revered water for its life-sustaining power, and worshiped Chac, the god of rain, because of this awe of H20. Many areas of Mexico are dotted with cenotesnatural underground sinkholesand the Maya believed that some of these sites were visited by Chac himself. As a result, some cenotes were designated as "sacred" and kept for rituals, offerings and sacrifices, while others were set aside for bathing, drinking and crop water. One of the most notable of the sacred springs is Cenote Sagrado, located near the major Mayan archeological site Chichen Itza in the Yucatan Peninsula. Created from a natural limestone cave, with steep sides stretching about 60 feet above the water line, this cenote was specifically used for ceremonies and occasional sacrifices; for the latter, men, women, and children were thrown in during drought times to appease the water gods. When archeologists dredged the spring in the 20th century, they found gold bells, masks, cups, rings, jade pieces, and more (many from the post-Spanish period) along with human bones.

Getting There:One of the most visited archeological sites in Mexico,Chichen Itzacan be reached by car or organized bus tours (typically about $35 per person) from nearby tourist hubs like Cancn or Cozumel, or via infrequent public bus service; the ride is about two-and-a-half hours from Cancn. The entry fee is about $8 and includes the evening light and sound show; headphone tours are $2. Cenote Sagrado is part of the Great North Platform section of the site.

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According to Buddhist traditions, around 500 B.C., when the ascetic Prince Siddhartha was wandering through what's now the state of Bihar in India, he took rest under a native bodhi tree. After meditating there for three nights, the prince awoke with enlightenment, insight and the answers he had been seeking, which developed into the teachings he went on to spread to his disciples. Naturally, the place where the Buddha reached enlightenment is one of the most sacred sites for Buddhists, and has been a major pilgrimage destination for centuries. Today, a temple complex surrounds what is believed to be a direct descendant of the original majestic tree itself, which sits in the middle of a courtyard surrounded by protective carved panels. A beautiful Buddha statue under the tree marks the significant spot.

Getting There:A UNESCO World Heritage Site, theMahabodhi Temple Complexis in the Bodh Gaya area of Bihar, India. The site is about three miles from the Gaya Airport and about seven miles from Gaya City. Car service, public buses, and bus tours are also available from the holy city of Varanasi; public buses run about $8.

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World's most sacred places