America's 11 most endangered places

Published On: Jun 06 2012 10:30:22 AM CDT   Updated On: Jun 24 2014 07:41:31 AM CDT

From Solomon Northrup's jail to Hawaii's first Christian church, check out these endangered landmarks before they disappear.

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Alan C. Spector/National Trust for Historic Preservation

Spring House -- Florida's only private residence designed by Frank Lloyd Wright, Spring House in Tallahassee was constructed in 1954. Weathered over time, its "hemicycle" design is one of the few that have survived.

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