Prince Charles and Camilla in Poland

From left, Poland's First Lady Maria Kaczynska, Polish President Lech Kaczynski, Britain's Prince Charles, and Camilla, The Duchess of Cornwall, stop for a photo after the royal couple arrived at the Presidential Palace in Warsaw, Poland, Monday, March 15, 2010. Prince Charles and his wife Camilla are in to Poland for a three-day visit.

Photos: Camilla Takes a Walk

Prince Charles in Poland

Britain's Prince Charles poses next to a Polish Tarpan horse in a primeval forest in Bialowieza, eastern Poland, on March 16, 2010. The prince is on his second day of a three-day visit to Poland.

Prince Charles' wife, Camilla, canceled plans to visit a Polish forest and a mosque with him due to back pain, his office said Tuesday.

Camilla has a pinched nerve in her back, Clarence House said. It said that, on medical advice, she canceled plans to travel with her husband from Warsaw to eastern Poland, where the prince is to visit a bison reserve in a primeval forest and a mosque belonging to Poland's tiny Muslim Tatar community.

Photos: Charles & Camilla

Bison in Poland

In this photo dated Feb. 2005, a herd of bison, Europe's largest land mammal, moves in the Bialowieza Forest in Poland. It's Europe's last remaining primeval forest, thanks to preservation efforts of various kings and czars from centuries past and present. It was one of the sights Prince Charles took in during his visit to Poland.

Prince Charles Toasts Polish President

Britain's Prince Charles and Polish President Lech Kaczynski, right, share a toast during an official dinner at the Presidential Palace, in Warsaw, Poland, Monday, March 15, 2010.

Photos: Charles & Camilla

Prince Charles Speaks in Poland

Polish President Lech Kaczynski, right, with wife Maria Kaczynska react as Britain's Prince Charles, center, speaks during an official dinner at the Presidential Palace, in Warsaw, Poland, Monday, March 15, 2010.

Charles gave a speech praising the historical links between Britain and Poland, mentioning the half-Polish King Canute, who ruled England in the 11th century as well as the Polish pilots who fought against Nazi Germany in the Battle of Britain.

Charles also referred to some of his charities that have been active in Poland since after the fall of communism in 1989.

Charles & Camilla in Polish Palace

Britain's Prince Charles speaks to his wife Camilla, the Duchess of Cornwall, prior to an official dinner at the Presidential Palace in Warsaw, Poland, Monday, March 15, 2010.

During his speech Charles said, "I was particularly keen to do what little I could to help your country after the collapse of communism, having for so long held a combination of profound admiration and heartfelt sympathy for the appalling suffering of the Polish people," according to the Press Association news agency.

Charles & Camilla at Royal Dinner

From left, Britain's Prince Charles, his wife Camilla, Duchess of Cornwall, Polish President Lech Kaczynski and his wife Maria Kaczynska pose for a photo prior to an official dinner at the Presidential Palace, in Warsaw, Poland, Monday, March 15, 2010.

Photos: A Royal Concert

Charles & Camilla at Warsaw Grave

Britain's Prince Charles and his wife, Camilla, lay a wreath at the grave of Rev. Jerzy Popieluszko, a priest who was kidnapped and killed in 1984 by Poland's communist-era secret police, in Warsaw, Poland, on Monday, March 15, 2010.

Popieluszko, who was aligned with the anti-communist Solidarity movement of Lech Walesa, is considered a martyr for the faith by the Vatican and will be beatified in June.

Photos: Charles and Camilla in Japan

Prince Charles Lays Wreath

Britain's Prince Charles lays a wreath at the grave of Rev. Jerzy Popieluszko, a priest who was kidnapped and killed in 1984 by Poland's communist-era secret police, in Warsaw, Poland, on Monday, March 15, 2010.

Popieluszko, who was aligned with the anti-communist Solidarity movement of Lech Walesa, is considered a martyr for the faith by the Vatican and will be beatified in June.

Royal Couple Honors Polish Priest

Prince Charles and his wife Camilla visit a museum dedicated to Rev. Jerzy Popieluszko in Warsaw, Poland, on Monday, March 15, 2010.

Photos: Charles and Camilla at the Races

Charles & Camilla in Poland

Britain's Prince Charles, and Camilla, The Duchess of Cornwall, on their way for a meeting with Polish Prime Minister Donald Tusk at the Prime Minister's Chancellery in Warsaw, Poland, Monday, March 15, 2010.
Photos: Charles and Camilla in the Caribbean

Prince Charles in Warsaw

Polish Prime Minister Donald Tusk, right, gestures during a meeting with Britain's Prince Charles, in Warsaw, Poland, Monday, March 15, 2010.

Photos: British Royals Celebrate

Princre Charles Meets Polish PM

From left, Polish Prime Minister's wife Malgorzata Tusk, Prime Minister Donald Tusk, Camilla, The Duchess of Cornwall and Britain's Prince Charles pose for a photo prior to a meeting at the Prime Minister's Chancellery in Warsaw, Poland, Monday, March 15, 2010.

Photos: Royal Couple in New York

Prince Charles Sees Polish Costumes

Britain's Prince Charles poses for a photo with traditionally dressed Tatar girls in the village of Kruszyniany, northeast Poland, Tuesday, March 16, 2010. On the second day of his visit to Poland, Prince Charles came to Kruszyniany, where he met representatives of the Muslim minority in Poland.

Prince Charles Watches Polish Cook

Britain's Prince Charles watches as Dzenneta Bogdanowicz makes a traditional Tatar dumpling in a Tatar restaurant in the village of Kruszyniany, northeast Poland, Tuesday, March 16, 2010.

Photos: Prince Charles at 60