Welcome to a list of the places you haven't heard of.  The earth is home to the most awe-inspiring natural wonders. There are must-visit hidden places for anybody who likes adventures. Listed here are some of the places that you think weren't popular but are in fact some of the most-visited tourist attractionsin the world.

Yungang Grottoes (China). Located in Datong city, Shanxi Province, it has 252 caves and 51,000 statues.  It represents the outstanding achievement of Buddhist cave art in China during the 5th and 6th centuries. 

Jeju Island (Korea). The largest island off the coast of the Korean Peninsula contains the World Natural Heritage Site, Jeju Volcanic Island and Lava Tubes. With a variety of choices, visiting the island will be memorable.  In an article found in Life in Korea, Jeju Island remains the favourite vacation place of Koreans and Japanese. It also remains the destination for Korean newlyweds.

Canadian Museum for Human Rights (Canada- Manitoba). The National museum is envisioned as a national and international destination. It's the heart of Canadian learning that engages in healthy discussions about stopping hate and oppression around the world.

Waimea Canyon State Park(USA-Hawaii). Formed by erosion from the Waimea River, the canyon boasts a colorful array of red, brown and green hues which are complemented by waterfalls and frequent rainbows. According to The Telegraph, it's nicknamed as the Grand Canyon of the Pacific. Waimea Canyon State Park encompasses 1,866 acres (7.5 km²) and is a popular tourist attraction on the island. For those who love to hike, here's one place for you.

Colonia del Sacramento (Uraguay). This is one of the oldest towns in Uraguay. The unique nature of Colonia del Sacramento is also based on its Urban landscape which is a mixture of vast arteries and large squares with narrow cobbled streets and more private spaces.  The unspoiled urban landscape illustrates the successful blend of the Portuguese, Spanish and post-colonial styles. 

For those who are planning to spend a holiday vacation in the most typical tourist attractions, why not try something new. These under-the-radar tourist attractions are also worthy of a visit.