1. (noun) a large and stately mansion

• castle

1. (noun) official residence of an exalted person (as a sovereign)

• alcazar

1. (noun) a large and stately mansion

• hall
• manse
• mansion
• mansion house
• residence

2. (noun) the governing group of a kingdom

• authorities
• government
• regime

3. (noun) a large ornate exhibition hall

• exhibition area
• exhibition hall

4. (noun) official residence of an exalted person (as a sovereign)

• residence

1. (noun) a large and stately mansion

• palatial

2. (noun) official residence of an exalted person (as a sovereign)

• palatial