Bohemia (/boʊˈhiːmiə/ boh-HEE-mee-ə; Czech: Čechy [ˈtʃɛxɪ]; German: ; Upper Sorbian: Čěska; Silesian: Czechy) is the westernmost and largest historical region of the Czech lands in the present-day Czech Republic. Bohemia can also refer to a wider area consisting of the historical Lands of the Bohemian Crown ruled by the Bohemian kings, including Moravia and Czech Silesia, in which case the smaller region is referred to as Bohemia proper as a means of distinction.