History of certain cities -- London, Paris, Vienna, Istanbul, Moscow, New York.
Georgian London.
Paris and the French Revolution.
Fin de Siecle Vienna and Austria-Hungary generally. Austria up to WW2.
-- culture, society, arts, politics are all intertwined in the history of urban areas.
Vikings/Norse/Normans.
History of the Baltic region (including Hanseatic cities).
Heresy, religious reformers, late medieval rebellions, Reformation and Counter Reformation, English Catholic recusants, religious wars.
The Netherlands.
Eastern Europe from late medieval times to modern.
Russian, Soviet Union and post-Soviet Russian history.
German area from 1815 and subsequently Germany.
WW1 eastern and western fronts
Rise of Nazis and WW2 -- all angles including military hardware.
Britain -- especially the Victorians and Edwardians and on through to the interwar period, political, social and literary.
American 20th century political history - certain presidents: FDR, Truman, Johnson, Nixon. And the American Civil War.
Childhood through the ages.
Everyday life in British India.
History and perception of history, history that has a life of its own so to speak.