Sigismund I, King of Poland

Stanislas Leszczynski, King of Poland

Ludwig II, King of Bavaria

Louise Marie of Orleans, Queen of the Belgians

Stanislas Poniatowski, King of Poland

Plenty of queens got their crown by sleeping with a king. Here's the only king who ever gained a crown by sleeping with an empress.

Astrid of Sweden, Queen of the Belgians

Bahadur Shah II, the last Mughal Emperor

Qianlong, Emperor of China

Kangxi, Emperor of China

Puyi, Emperor of China

Shunzhi, Emperor of China

Xiaosheng, Empress Dowager of China

Franz I, Emperor of Austria

He was a great man, but those tights were a very bad idea.

Frederick Barbarossa

From the Kyffhauser Monument, Germany.

Charlemagne

By Durer

The 19th century view.

From his own time. Contrary to later myth, he never had a long, white beard.

Grand Duchess Elisabeth Feodorovna

Grand Duke Sergei Alexandrovich

Grand Duchess Elisabeth Mavrikievna

Grand Duchess Alexandra Petrovna

Maria Anna of Saxony, Electress of Bavaria

Charles of Saxony, Duke of Kurland

Henri, Grand Duke of Luxembourg

Charles XII, King of Sweden

The biggest loon ever to wear a crown.

Alexander III, Emperor of Russia

If his son had half his skill in dealing with people, things might have been very different.

Alexander II, Emperor of Russia

Alexander III, Emperor of Russia

Wedding of Nicholas II

Grand Duke Vladimir Alexandrovich

Nicholas II, Emperor of Russia

Frederick the Great, King of Prussia

Elisabeth Christine of Brunswick-Bevern, Queen of Prussia

Christian VII, King of Denmark

Maximilian, Emperor of Mexico

Cixi, Empress of China

Paul I, Emperor of Russia

Peter the Great

On his deathbed.

Praskovia Saltykova, Tsaritsa of Russia