The Pravčická brána (in English also Pravčice Gate, Pravčická Gate or Pravcicka Gate; German: Prebischtor) is a narrow rock formation in Bohemian Switzerland in the Czech Republic, approx. 3 km northeast of Hřensko. With a span of 26.5 metres, an inside height of 16 metres, 8 metre maximum width and 3 metre arch, it is the largest natural sandstone arch in Europe, and one of the most striking nature monuments in the Elbe Sandstone Mountains. It is protected as a national nature monument.