Calling all citrus geeks!
The UC Riverside Citrus Variety Collection, a so-called germplasm repository, holds one of the world's most comprehensive collections of citrus trees—over 1,300 varieties at last count. This place is a citrus museum of the first order, a Noah's Ark, a Citrus Hall of Fame. Its holdings span the entire history of citrus from the crude ancestors (shaddock, citron, Papedas and Trifoliates) to the sveltest next-wave mandarin hybrids ("Tango"). It's a weird and unique place.
It's also locked up like Fort Knox. I visited the collection while writing my book, but it wasn't easy to get in—I had a friend pull strings at the chancellor's office to pry open the door for me.
Your chance to visit comes on April 16 this year, when the collection opens to the public for one day only. My tip to you: seriously go.