Landmark - a building or place that is easily recognized, especially one that you can use to judge where you are
GUM - is the main department store in many cities of the former Soviet Union, known as State Department Store (Russian: Государственный универсальный магазин, tr. Gosudárstvennyj Universáľnyj Magazín) during the Soviet era (until 1991).
Christmas tree - an evergreen tree or an imitation of one, decorated as part of Christmas celebrations
Red Square - is one of the oldest and largest squares in Moscow, the capital of Russia.
Soviet - Soviet is used to describe something that belonged or related to the former Soviet Union.
Show - a public exhibition of things, such as works of art, fashionable clothes, or things that have been entered in a competition.
Take down - destroy a building
Demolish - destroy a building completely
Channel - a television station
Logo - a trademark, company emblem, or similar device
Historic - related to history, important for the history
Exhibition - a public event at which pictures, sculptures, or other objects of interest are displayed, for example at a museum or art gallery.
Definition of landmark from the Cambridge Advanced Learner's Dictionary & Thesaurus[