1)I travelled last summer.
2) I went to my grand mother in Kaliningrad.
3) I travelled by plane/
4) We travelled together with my mother and father.
5) I went to this place to visit my grandparents and to saw this city.
6) I saw attractions, big and beautiful houses and museums.
7) There met me my grandfather and my cousin.
8) The city was like capital of Germany.
9)Yes, i did. I so enjoyed my trip.
10) Yes, i would. I hope that i will go there again.