India, July 27 -- For the past three years, Prince William and Kate Middleton have lived with their kids at Adelaide Cottage, a quiet four-bedroom home on the grounds of Windsor Castle. It's smaller by royal standards and was never meant to be their long-term house. As per sources, the couple is thinking about moving to a larger place, according to a Daily Mail report.

One possible new home is Fort Belvedere, a historic Gothic-style mansion tucked inside Windsor Great Park. It was built in the 1700s and became a favorite of Edward VIII, who lived there before and after his short reign. He even signed his 1936 abdication papers at the property.

Fort Belvedere sits on 59 acres and includes a pool and tennis court. Insiders say these are a...