For palatial modern architecture

Modern architecture, often known as modernist architecture, was founded on new and inventive building technology, notably the use of glass, steel, and reinforced concrete; the belief that form should follow function (functionalism); an embracing of minimalism; and a rejection of adornment. It arose in the first part of the twentieth century and dominated after World War II until the 1980s, when postmodern architecture progressively superseded it as the dominant style for institutional and corporate structures.

Al Alam Palace, a dazzling gold and blue royal home, is a natural place to start looking at regal architecture. The Royal Opera House is next, with its remarkable combination of Omani and Italian-imported marble and Burmese teak. It's also worth peeking into certain high-end hotels: the Al-Bustan Palace Hotel boasts an atrium 38m high with a blend of art deco and opulent Arabian stylings, comparable to those of a museum.