When you're thinking about interior design, it's easy to overlook the flooring. The floor is right under our feet - we don't even think about it. But the right choice of flooring can transform a home or office design from everyday to extraordinary. Here are 5 choices - some classic, others modern - that we love. Classic stone flags Stone flooring has been used in buildings for literally thousands of years. It's durable, reliable - and, depending on the stone you choose, can include a dazzling variety of colors and patterns. Fashionable concrete Next, an artificial stone flooring type. Industrial concrete has made a serious comeback in 2019. Designers and architects are starting to rediscover the powerful beauty of deep grey, polished concrete. What's more, concrete can be poured to fit any design that you choose. Natural materials for rugs and carpets We've talked before about the trend for sustainable materials and eco-friendly interior design. Warm up stone, cement or wooden floors with rugs and throws in natural materials. Think chunky rugs from recycled wool, traditional woven fabrics, and Japanese-style bamboo mats. Barcelona tiles At the end of the 19th century, cutting-edge Modernist architects started to use "hydraulic tiles": concrete tiles that were covered with symmetrical, geometric or floral designs in bright colors. Now in 2019, hydraulic tiles have surged back to popularity. Use Barcelona-style flooring or just add a few tiles to accent the rest of your design.Luxurious carpets Finally, as we reach the end of 2019, it's time for some luxurious fall trends. We're focusing on warmth and comfort... and that means rich, deep carpets. Choose soft carpets in deep jewel colors or soft greys for a truly 2019 color scheme.