I was quite overpowered by the grandeur of the house.
Advanced English Dictionary
+verb[VN] 1 to defeat or gain control over sb completely by using greater strength: Police finally managed to overpower and arrest the gunman. + Manchester United completely overpowered their rivals to win 40. 2 to be so strong or great that it affects or disturbs sb/sth seriously: Her beauty overpowered him. + The flavour of the garlic overpowered the meat.
Random quote: The superior man acts before he speaks, and afterwards speaks according to his action.: Confucius