An ornate door at the House of Wonders in the old town of Zanzibar City in 1991. Getty Images
The House of Wonders was built in 1883 for Barghash bin Said, second Sultan of Zanzibar, when the island was under Omani rule. Getty Images
A view of the harbour in Stone Town, Zanzibar, in the late 19th century with the House of Wonders (Beit Al Ajaib) in the background. Getty Images
A military parade in front of the House of Wonders, which was the home of the sultan in Zanzibar, after 1896. Getty Images
The House of Wonders before the collapse. Saleh Al Shaibany
The House of Wonders after the collapse on December 25. Photo: Saleh Al Shaibany
A carved doorway at the House of Wonders, circa 1938. Getty Images
The interior of the House of Wonders, which was converted into the Museum of History and Cultures, on October 1, 2009. Getty Images
Prince of Charles of Britain views displays of British-supported development projects during a visit to the House of Wonders in Zanzibar, Tanzania in 2011.
Prince Charles looks at exhibits at the House of Wonders on November 8, 2011. Getty Images
An ornate door at the House of Wonders in the old town of Zanzibar City in 1991. Getty Images
The House of Wonders was built in 1883 for Barghash bin Said, second Sultan of Zanzibar, when the island was under Omani rule. Getty Images
A view of the harbour in Stone Town, Zanzibar, in the late 19th century with the House of Wonders (Beit Al Ajaib) in the background. Getty Images
A military parade in front of the House of Wonders, which was the home of the sultan in Zanzibar, after 1896. Getty Images
The House of Wonders before the collapse. Saleh Al Shaibany
The House of Wonders after the collapse on December 25. Photo: Saleh Al Shaibany
A carved doorway at the House of Wonders, circa 1938. Getty Images
The interior of the House of Wonders, which was converted into the Museum of History and Cultures, on October 1, 2009. Getty Images
Prince of Charles of Britain views displays of British-supported development projects during a visit to the House of Wonders in Zanzibar, Tanzania in 2011.
Prince Charles looks at exhibits at the House of Wonders on November 8, 2011. Getty Images
An ornate door at the House of Wonders in the old town of Zanzibar City in 1991. Getty Images
Oman to investigate collapse of House of Wonders in Zanzibar
Oman will send specialists to Tanzanian island to assess landmark named as beneficiary in Sultan Qaboos' will