Ten years ago, the 6.8 magnitude Nisqually Quake shook Western Washington, injuring hundreds and damaging buildings across the region.

The Feb. 28, 2001 quake shook meeting rooms, homes, the state capital and the mayor's conference room. Windows in the Sea-Tac Airport control tower were blown out and the Alaskan Way Viaduct suffered significant damage.

SLIDESHOW: Scenes From 2001 Quake

Much of the worst damage occurred in Seattle’s historic Pioneer Square area. The site of the now-closed Fenix Café was one of the brick buildings where old bricks crumbled.

While the damage has since been repaired and buildings restored and retrofitted, the quake exposed weaknesses in structures such as the Viaduct.

Since then, scientists said they've learned a lot about how vulnerable the region is and that more needs to be done.

"I think as time passes and new buildings go up, we get safer and safer. It is true. But the more and more people and more and more buildings are out there, so each event is probably going to cause more damage,” said John Vidale with the Pacific NW Seismic Network.

The U.S. geological survey estimates there is a better than 80 percent of a 6.5 magnitude or greater within the next 50 years.

In the Puget Sound region, scientists have added more than 10 active faults to a list that numbered two in 2001.