2 . Best royal palaces in Europe you can visit

There are some royal palaces in Europe that they often open their doors to the public.

Drottningholm Palace, Sweden

This breathtaking 17th century palace in Drottningholm is not only the residence of the Swedish royal family, but it’s also a UNESCO World Heritage Site thanks to its impressively preserved castle and theatre. The palace and park are open to the public year-round.

Royal Palace of Oslo, Norway

The official royal residence for the Norwegian royals, this beautiful palace boasts neoclassical architecture and landscaped gardens complete with ponds and eye-catching statues. During the summer months the palace opens to the public on guided tours, which include beautiful staterooms (会客厅), the Bird Room, the Great Hall and the Family Dining Room.

Royal Palace of Madrid, Spain

While the Palacio Real is officially the royal residence, nowadays the Spanish royals choose to live in the Zarzuela Palace instead, with the Madrid palace used mainly for state ceremonies. There are over 3, 000 rooms in this breathtaking palace making it one of the largest palaces in the world. Highlights include the royal kitchens and the painting gallery, while the Changing of the Guard ceremony never fails to be a hit with tourists.

Palace of Versailles, France

If you seek after a palace that’s luxurious (豪华的), then the Palace of Versailles needs to be on your list. France hasn’t had a royal family since the French Revolution in 1789, but this palace offers a glimpse into how the former royals lived, as well as serving as a museum paying tribute to France’s rich history.

Xiechi Lake, also known as Yuncheng Salt Lake in China’s Shanxi Province,     1     (become) popular on social media websites in the past few years.

Now, China wants to transform that online     2     (popular) into real-life tourism. “As the Chinese ‘Dead Sea’, floating here is     3     unforgettable experience, and one you can’t find anywhere else,” reads a tourism advertisement     4     (sponsor) by the Yuncheng Salt Lake Tourism Development Company. Yuncheng Salt Lake is a sulfate (硫酸盐) lake. “If the sulfate in your water is greater than the calcium (钙), all the calcium is used up,     5     leaves you with large amounts of sulfate and you have a sulfate lake,” explains geography professor Bernie Owen. Xiechi is also a “closed basin” lake,     6     (mean) it doesn’t flow out to a river or ocean, which explains how its salt content stays so high. It is possible for salt lakes to freeze over, although not as     7     (quick) as other lakes — after all, think about what happens when we spread salt over icy roads. Saltwater freezes at     8    (low) temperatures than fresh water.

In an effort     9     (boost) Xiechi Lake’s international profile, China is reportedly taking steps to get it recognized     10     a UNESCO World Heritage site.

6 . Here we give you an introduction to several cities in the world that were lost in the past and discovered again after a long time.

Machu Picchu

Machu Picchu is a very mysterious city near the Urubamba Valley in Peru. It was discovered by the historian Hiram Bingham in 1911, and until then, no one knew of its existence. The city has special structures bordered by stone walls. It is said that the Incas built the city and it was abandoned 100 years later. The main reason is unknown, but some people believe it was due to a decreasing population.

Atlantis

It is still in debate whether this city exists in reality. The city first appeared in Plato’s fictional work in 360 BC. And since then, so many historians and scientists have been in search of the lost city. It is believed that the city sank into the Atlantic Ocean. But some say it was an island in the Mediterranean, an island in northern Europe, or even in Antarctica.

Mohenjo-Daro

Situated in the Indus Valley, the Indus Valley civilization is one of the oldest civilizations. It is believed that the science, art, trade, writing and agriculture of the city was in an advanced form and it had ordered streets and proper drainage (排水) systems. The city disappeared because of climate change. It was rediscovered in 1922.

Pompeii

The city, which is situated not far from Rome, was destroyed in AD 79 due to a volcanic eruption (火山爆发). The entire population was buried under 60 feet of ash. It had around 20,000 inhabitants at that time and the city was a quiet spot for vacation for the upper classes of Romans. After its loss, the ruins were buried and forgotten for 1700 years before being discovered.

10 . Four Best Hikes in the World

There's nothing like getting out and getting some fresh air on a hike. No matter whether your idea of a hike is a leisure walk or climbing the highest mountain on Earth, we've got you covered. Below are four best hikes in the world.

Torres del Paine W Circuit

Location (位置): Patagonia. Chile

Distance: 37 + miles

Time: 5~6 days

Best time to go: October to January

The W Circuit is one of the most recommended hikes you'll find. Not only will you appreciate the diverse landscapes and striking granite pillars (花岗岩柱子), but you'll probably meet some new friends along the way.

Grand Canyon Rim - to - Rim Hike

Location: Arizona, the United States

Distance: 48 miles

Time: 1~3 days

Best time to go: May to June, September to October

There's no better way to experience one of the greatest wonders in the world. Located in one of the USA's most beautiful parks, the views are absolutely appealing. Just make sure you're prepared for the challenge.

Trek to Petra

Location: Jordan

Distance: 47 miles

Time: 5~ 6 days

Best time to go: October to April

Take the road less traveled through the Kingdom of Jordan and experience one of the seven wonders of the world. Hike through canyons, gorges and ridges, and see tombs and temples along the way all while avoiding crowds of tourists.

Yosemite Grand Traverse

Location: California, the United States

Distance: 60 miles

Time: 6~7 days

Best time to go: July to September

Known for some of the best hiking in the world, Yosemite National Park is famous for its views and huge sequoia (红杉) trees. Praised by National Geographic, the Yosemite Grand Traverse will take you through waterfalls and green mountaintops.