When you go to St. Petersburg, the number of attractions can seem large. If you are short of time, or just want to make sure to hit the highlights, these are the top must-see sights in St, Petersburg.

The Hermitage Museum

    The Hermitage Museum is one of the most important sights to see for any visitor to St. Petersburg. There are lots of different paintings by the old masters in the Hermitage. Prepare to come face-to-face with classic Western artists.

Kizhi Island

    Kizhi Island is an open-air museum of wooden architecture from the Karelia Region of Russia. These impressive structures are made entirely without nails - the wood fits together with joints and grooves (沟槽）.

Peterhof

    Peterhof is as beautiful as it is fun. You'll be charged for admission, but go to Petethof when the fountains are working-during the day in the summer. They are shut off in winter evenings,

The Church of Our Savior on the Spilt Blood

    Love it or hale it, the Church of Our Savior on the Spilt Blood in St. Petersburg is an enthralling must-see sight. The beautiful look may make y our eyes brighten, and the painting inside the church will make you say “Wow!”

The Bronze Horseman Statue

    The so-called Bronze Horseman is a part of Russian culture and a symbol of St, Petersburg. Made famous by Alexander Pushkin, this statue of Peter the Great sitting on his horse can truly show Peter the Great's influence on the Russian idea of greatness.

    Here are four tourist attractions in Havana in Cuba.

    Museum of the City

    The Museum of the City was built in 179L The building once served as the Presidential Palace and home to colonial governors. The museum's exhibits include collections of weapons, history and art as well as rooms documenting wars for Cuban independence.

    +53-7-861-6130 .

    Open: 9 a.m. to 6 p.m., Monday through Saturday.

    Admission: $ 3

    Revolution Square

    Revolution Square is one of the largest open public spaces in Cuba and one of the largest public squares in the world. The site is home to the 138-foot Jose Mart Memorial, the tallest structure in Havana, which celebrates the national hero. Cuba's important leaders, including Fidel Castro, usually use the platform in front of the memorial to address the large crowds that gather on the square. The Jose Marti Memorial also includes a museum and an elevator that takes tourists to the top of the monument.

    +53-7-338-6363

    Open: 9 a.m. to 5 p.m., Monday through Saturday.

    Admission: $ 5

    Cigar Factories

    Cubans famous cigar-making factories are open to the public. Three cigar factories in Havana offer public tours that show how Cuba's cigars are hand-rolled in the traditional way. The Partagas Cigar Factory, founded in 1827, is the oldest in Havana. The other two factories open for tours are La Corona and Romeo Julieta, and they include gift shops.

    +53-7-338-060

    Open: 9 a.m. to 2 p.m., Monday through Friday.

    Admission: $ 10

    Old Havana

    Old Havana is the capital's historic district, which dates back to 1519 when Spain used the city as a colonial port. Old Havana was important Spanish naval (海军的）base. Presently, Old Havana's stone streets are home to museums, hotels and restaurants among the grand colonial buildings that once housed Spanish power.

    +53-7-885-752

    Open: daily.

    Admission: free

    Microsoft has developed a new smart phone app that interprets eye signals and translates them into letters, allowing people with motor neurone disease to communicate with others from a phone.

    The GazeSpeak app combines a smartphone's camera with artificial intelligence to recognize eye movements in real time and convert(改变) them into letters, words and sentences.

    For people suffering from ALS（渐冻症）, also known as motor neurone disease, eye movement can be the only way they are able to communicate.

    “Current eye-tracking input systems for people with ALS or other motor impairments are expensive, not robust under sunlight, and require frequent re-calibration and substantial, relatively immobile setups,” said Xiaoyi Zhang, a researcher at Microsoft who developed the technology.

    “To mitigate the drawbacks…we created GazeSpeak, an eye-gesture communication system that runs on a smartphone, and is designed to be low-cost, robust, portable and easy to learn.”

    The app is used by the listener by pointing their smartphone at the speaker. A chart that can be stuck to the back of the smartphone is then used by the speaker to determine which eye movements to make in order to communicate.

    The sticker shows four grids(方格) of letters, which each correspond to a different eye movement. By looking up, down, left or right, the speaker selects which grids the letters they want belong to. The artificial intelligence algorithm（程序） is then able to predict the word or sentence they are trying to say.

    King's College Summer School is a training program every year for high school students at all levels who want to improve their English. Courses are given by the teachers of King's College and other colleges in New York. Trips to museums and culture centers are also organized. This year's summer school will be from July 25 to August 15.

    More information is as follows:

Visit Chicago Children's Museum

    In brief:

    This museum offers plenty of fun hands-on activities for kids. However, this is one of the few Chicago museums not "fun for the whole family" as adults and older kids will be bored to tears.

    Address: 700 East Grand Ave. (Navy Pier), Chicago

    Phone: 312- 527-1000

    Public transportation:

    CTA bus lines # 29 (State Street), #65 (Grand Avenue), and # 66 (Chicago Avenue) all serve Navy Pier.

    Parking fees:

    · Monday through Thursday: $ 20

    · Friday through Sunday: $ 24

    · Holidays: $ 24

    Opening hours:

    · Weekdays: 10 a. m.-5 p. m

    · Weekends: 10 a. m.-8 p. m

    Entrance fees:

    ·Adults: $12

    ·Children: $12

    ·Seniors (65+): $11

    ·Children (under 5): free

    Activities:

    Located at one of Chicago's top tourist attractions, Navy Pier, the museum offers three floors of activities for kids, including:

    ·Play It Safe—all about home safety

    ·Inventing Lab—provides parts and instructions for creating things

    ·Kids Town—a playroom recreating a Chicago neighborhood where kids can pretend to do things like shopping for groceries and driving a CTA bus

    ·Climbing Schooner—a three-floor climbing building

    ·My Museum—kids get to create various pieces of art that are "all about me"

    ·Skyline—kids learn about skyscrapers and design their own buildings

    ·Tree House Trails—a play area designed like a forest

    ·Waterways—water activities showing how pumps and dams work