Hello and welcome back to The Weekly LOdown - where we gather our favorite links from the architecture and building industry and share them with you at the end of each week.

This week we’re all over the map, literally and figuratively. Here’s what we’ve been clicking:

Jack

Necessity is the mother of invention. Mumbai has decided to put people on an El!

Allison

I may be able to write about architecture, but when it comes to practicing what I preach, my skills are limited to amateur interior design. That’s why I was checking out this list of top design trends for 2010, compiled by 10 designers in Tennessee. The general consensus seems to be that turquoise is the color of the new year, which is pretty convenient considering I recently painted a room peacock teal. It’s interesting to see the connections between interior design trends and the state of the economy. If you’re considering any remodeling this year, I recommend reading what these designers have to say.

Lauren

I’ve been drawn to articles on eclectic residential design a lot lately, and this week is no exception. I absolutely adore this treehouse in Portland. I never had a treehouse growing up, so maybe that’s part of the reason why I wouldn’t mind living in this one. The interior is fantastic with all of its glass and curves. From the images, it’s a bit unclear as to whether or not this is an actual treehouse or just an oddly shaped house in the middle of the woods. Regardless, it’s exactly my style – contemporary, modern and unique for sure.

Nick

I find nearly everything about air travel intriguing and often reflective of the human condition - especially security lines and all the logistics of getting from point A to point B. That’s why I was immediately captured by this slideshow of the world’s most beautiful airports. In the 1960s, air travel was not for the common man. It was really a glamorous way to travel, so airports were designed with a lot of style in mind: Remember the TWA terminal at JFK? (Which JetBlue has now so smartly refurbished) Nowadays, air travel is considered one of the least glamorous and most uncomfortable things you can do. And airports have gotten less interesting to look at too. But I still love flying, and I will always love airports - especially those with absolutely beautiful designs. They’re just buildings, but for me they’re microcosmic - people going, people waiting, anger, happiness, work, love, etc. All of it happens inside airports.