1. A large, impressive, and stately residence, typically belonging to a wealthy or prominent person
The grand house stood majestically on top of the hill.
A mansão estava majestosamente no topo da colina.
2. A historic or architecturally significant large dwelling, often open to the public
They toured the grand house and admired its ornate decorations.
Eles visitaram a mansão e admiraram suas decorações ornamentadas.