Synonyms of towers

1 Syllable
keep, fort, mast
2 Syllables
spire, pillar, castle, turret, column, belfry, steeple, stronghold, lookout, fortress
3 Syllables
skyscraper, citadel, minaret, refuge, obelisk, monolith
4 Syllables
edifice
5 Syllables
fortification