- Changing from your existing masonry fireplace to the linear gas fireplace in the photo you posted a link to would likely be fairly expensive, as it would require removing/modifying the masonry of your existing fireplace, but there are other approaches you might consider. One of the keys to modern is minimalism. You might try keeping the appearance as uncluttered as possible - perhaps by removing an existing mantel or stripping away other elements to leave only the most essential parts. If it is a wood burning fireplace, the building code requires that you leave non-combustible hearth protection in front of the fireplace, but you might be able to change the hearth material to make it more modern (pink wall with hearth flush on floor). The other thing you might consider is changing over to a modern gas burner, with glass media or stones (first photo, with black mantel). There are gas inserts that are beautiful as well last photo with stone wall), but the investment goes up when you get into a full system with firebox, surround, venting etc. If you have a photo of your current situation, we might be able to tailor our suggestions to be more helpful.

Thank you roj leather and Simon for your recommendations. I like the hanging chair and the almanda creeper on the wall. This will certainly liven up the patio.

A thick concrete wall can keep your house cool. Steel will make your house hot unless you insulated the walls well. Insulated walls don't work very well in a flood zone. When they get wet, you need to tear them apart. You will need concrete for the foundation most likely unless you are driving steel pylons. There is probably a combination of the two that will suit your needs best. It would be helpful to know what you want to achieve by using steel. There are advantages to both. Steel floors can be cantilevered further. It is easier to make bigger window openings. Floor and roof spans can be lighter and quicker to build with steel, but the roof will get hotter and therefore need good insulation and need to be well ventilated. These are just general assumptions of certain building practices so that you know what to ask people where you live. The practices and resources vary from place to place and building something for a specific purpose can change the benefits of one material or the other. My best guess is that you will probably want to use both.

How do you decorate your place, what kind of style, colors, and feelings? That will greatly influence the type of door you might want. Also, think of your budget, and whether you want to install it yourself or hire a professional (you don't need to tell us, just keep that in mind). Then look around Houzz, in the products page, they have lots of interior sliding doors and hinged ones, from elegant frosted glass in a dark wood frame, to rustic reclaimed wood planks. You may not want to purchase that exact model, but it might give you a better idea of what would fulfill your airflow needs without sacrificing style.