Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

The Citrus Variety Collection at UC Riverside contains two trees of each of the 1,000+ varieties of citrus.

The Route 66 institution that inspired Taco Bell also served as an important headquarters for Mexican-American social movements.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.