Tickets for 2010 tours of the Philip Johnson Glass House in New Canaan are now on sale. Even if you've already visited the 47-acre site, now you can see the house and landscaping in a whole new light.

Tours will now be offered at dusk, called "Twilight Tours". You can see by these pictures how lighting makes the house almost take on a new shape.

"Twilight Tours" is an extended two-hour guided tour that costs $45 per person. This tour allows photography. The 90-minute standard tour, which is $30, does not allow photos.

The lighting was designed by Richard Kelly, considered one of the pioneers of architectural lighting design.

Photo credits: top: Michael Patrick Finley

bottom: Robin Hill, courtesy Philip Johnson Glass House

For tickets, go to PhilipJohnsonGlassHouse.org or call 866-811-4111.

The 2010 Glass House tour season begins in May and runs through November (closed Tuesdays).

Heather Kovar