1714 West Sunset Boulevard
What it is: A time travel supply store.
Why it's cool: The Echo Park Time Travel Mart is fully stocked with anything you'll need to survive the past or future. That means canned mammoth chunks, barbarian repellent, and enough anti-cloning fluid to last you a lifetime.
These seem like things no one would ever need, but it's all in fun, and quite popular—there's even a second location, the Mar Vista Time Travel Mart.
The store is a fundraising front for writer Dave Eggers' nonprofit organization 826 National, a writing and tutoring center for kids.