She was Helen of Troy. So it was Troy.
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Helen was NOT from Troy originally. She was kidnapped from Sparta, her husband Menelaus was the king of Sparta. Paris of Troy either kidnapped her, or she fell in love with him and ran away with him (depending on which story you read) and they went to Troy.
Helen was kidnapped in the city of Sparta
Paris kidnapped Helen and brought her back to Troy.
Helen of Troy
Paris
Whether she was actually kidnapped or not is open for debate, but the best answer would be Paris, with the help of Aphrodite.
Helen was born and raised in Sparta. But when she was "kidnapped" by Paris, she lived in Troy.
She was taken to Troy from her royal home in Sparta.
Helen was not kidnapped, she enthusiastically ran off with Paris, and stole her husband's Menelaus' treasures as well to take with her..
The Greek mythological stories did not happen in our chronology.
2 theories: When Paris came to stay at Helen and her husband's house he kidnapped her OR she willingly went with him.
Helen was the daugher of Zeus and she married Menelaus of Sparta. She got kidnapped by Paris of Troy and this is what caused the Trojan War.
Helen of Troy was kidnapped, and she was said to have a face that launched a thousand ships.