楼 - watchtower, lookout, high building

skyscraper

belfry; bell tower

multistoried building; castle; palace; shrine

tall building; tower

mirage

tall building

family or brothel with a beautiful woman

Fujian tulou (traditional rural dwellings in Fujian, China)

two-storied gate; tower gate

climbing a tower; going up a tall building

temple tower housing a drum for marking the passing of time

officially sanctioned brothel (Edo-period)