Weekends are for dreaming, so we took a spin around the web this morning in search of the most extravagant architectural feats we could find. We’re happy to say, we weren’t disappointed. For some, dreams do come true: Curbed, for example, is letting us in on a photo tour of the most expensive estate in America (above), listed at $125 million and encompassing 100 rooms (15 of which are bathrooms), a 50-seat theater and a nine-car garage all tucked away in Holmby Hills, a suburb of Los Angeles.

Speaking of the heart of the entertainment industry, Architectural Digest is giving a behind-the-scenes peek at the set of the PBS smash hit Downton Abbey and chatting with its designers about the process of recreating the WWI-era Highclere Castle:

A veritable bargain compared to the estate we mentioned earlier is the secret beach hideaway Sotheby’s just listed for a cool $24 million in Kilauea, Hawaii.  The views alone are enough to pack it all in and leave the rest of the world behind for good…the house itself is just the icing on the cake:

Over at Dwell, we’re given an intensive look inside the Hotel Fasano Boa Vista in Brazil, with its interiors made almost entirely of gorgeous Brazilian wood and its 29-stall equestrian center designed by Isay Weinfeld…

Arch Virtual has announced the debut of its innovative 3D city modeling project in conjunction with Realtime Cities, offering interactive, customizable models of cities for use in the architectural and community planning community…

…and finally, Abitare is spilling the beans on the updated and re-released Modern Architecture Game by Dutch studio NEXT. The parlour game for hardcore architecture enthusiasts was first released in 1999, and it’s back on the market, new and improved, for professional and aspiring skyline changers to hone their knowledge and envision designs even bolder and more intelligent than ever before.

Happy dreaming!

Photo credits:  Curbed, Architectural Digest and Sotheby’s.