The Scots actor snapped a selfie at Frank Lloyd Wright’s famous “Falling Water” house on Sunday night.
He posted a picture of the visit on Twitter and Instagram - featuring his face nearly eclipsing the world-famous architectural landmark in the background.
His caption read: “I visited Frank Lloyd Wright’s Fallingwater today. So beautiful.”
The house - often voted America’s most iconic work of architecture - lies deep in the Pennsylvania wilderness, over 2,500 miles from McGregor’s LA home. McGregor is known to be a fan of architecture and design - having narrated an Open University short film series on the subject.
But members of his 832,000-strong Twitter following were torn over whether McGregor or the house was the greater beauty.
One user, Ghazala Khan, said: “Oh my god, your face! I’m sure the background is great too but I only see you!”
Another gushed “You get better with age!”
That was probably in reference to 44-year-old McGregor rather the 76-year-old house.