A T and O map or O-T or T-O map (orbis terrarum, orb or circle of the lands; with the letter T inside an O), is a type of medieval world map, sometimes also called a Beatine map or a Beatus map because one of the earliest known representations of this sort is attributed to Beatus of Liébana, an 8th-century Spanish monk.
map | Road map for peace | Walter Map | Karnaugh map | World map | world map | Web Map Tile Service | Vinland Map | Vinland map | treasure map | Map projection | map projection | Logistic map | International Map of the World | Great Polish Map of Scotland | Girolamo Porro, ''Antique map of Iceland'', from the National and University Library of Iceland | Dymaxion map | Beatus map | Topographic map | topographic map | The Map that Changed the World | Soleto Map | ''Siegfried Map'' of the Türlersee | Rocque's map of 1754 | Ripley's map of cephalic index | relief map | Off the Map (TV series) | Off the Map | Norman B. Leventhal Map Center | Mitchell Map |