The terms 'concrete' and 'cement' are often used interchangeably to describe hard, gray building material, but there is a difference.

ARCHITECTURE
Eight buildings designed by Frank Lloyd Wright, including Fallingwater and Taliesin West, have been officially recognized by the UNESCO World Heritage Committee.
Under, which just opened in Norway, is the first underwater restaurant in Europe and the largest in the world.
You may have snapped a photo of England’s most iconic clock, but how well do you really know the United Kingdom’s towering timepiece?
Dubai's Burj Khalifa is twice as tall as the Empire State Building, making it the tallest building in the world. But it's about to have some competition for that title.
A fire destroyed much of Notre-Dame's roof on April 15, but the bees living in wooden beehives above the cathedral survived.
For almost two centuries, the reigning monarchs of the United Kingdom have used Buckingham Palace as their administrative headquarters. The building has survived everything from World War II bomb strikes to a crafty undergarment thief.
The iconic cathedral is facing years, if not decades, of repairs that could cost more than $1 billion. If you'd like to help, here's how.
Notre-Dame's roof and spire were destroyed in a fire on April 15, but the cathedral's bell towers, facade, and many of its relics survived.
Austin homeowner Emilio Rodriguez really, really likes pink. He told local reporters, "I love this house. I don't know why people don't like it."
Although the towering tribute to President George Washington is an icon of the Washington, D.C. skyline, there might be a few things you don't know about the Washington Monument's history.
Architectural innovation has been a defining feature of societies since then our ancient relatives began construction shelters 400,000 years ago. From energy-efficient designs to community-based spaces, these seven designs could help shape the future.
Architectural innovation has been a defining feature of societies since then our ancient relatives began construction shelters 400,000 years ago. From energy-efficient designs to community-based spaces, these seven designs could help shape the future.
It was left there on purpose in the 1990s.
The big issues with small homes.