Questions & Answers about Высокая башня видна из окна.
Because it agrees with башня, which is feminine singular nominative.
- высокий = the dictionary form of tall/high
- высокая = feminine singular nominative form
Since башня is feminine, the adjective has to match it:
- высокий дом = a tall house
- высокая башня = a tall tower
- высокое здание = a tall building
Russian adjectives change form to match the noun’s gender, number, and case.
In Russian, nouns have grammatical gender. Башня is a feminine noun.
A common clue is that many feminine nouns end in -а or -я, and башня ends in -я. That is why words agreeing with it, like adjectives or short-form adjectives, also appear in feminine forms:
- высокая башня
- башня видна
So the feminine agreement is grammatical, not based on any real-world sex.