By Lyndsey Matthews
April 22, 2011

100 Places to Go Before They Disappear, a gorgeous new book of photos which comes out May 1, is dedicated to 100 places around the world that are already on their way or in danger of disappearing forever. In honor of Earth Day, which began as an environmental teach-in in response to an oil spill off of California's coast in 1970, we’re highlighting a few excerpts from some of the most fascinating destinations featured in the book, available from Abrams Publishing on May 1 for $24.95.

How are you celebrating the Earth today? Which location would you like to visit before it potentially disappears forever?

Lyndsey Matthews is an online editorial assistant at Travel + Leisure.