Some pictures just require a second look.

But it's so interesting these kinds of optical illusions that play on our imagination, they're like a little puzzle. From a puddle looking like a freaking galaxy to a sunset's reflection making it look like everything's on fire – all of these pictures are guaranteed to make you look twice!

Check them out!

1. A UFO sighting?

© Sighma

Nope, just a car door.

2. Oh, just a picture of concrete.

© majorwtf

Wait, it's New Delhi. (Kind of a sad sight, don't you think?)

3. Dramatic ocean waves?

© spicedpumpkins

Nope, that's just fog.

4. A beautiful looking Nebula?

© agirlcalledher

It's just a firework display. Still really cool, though!

5. Oh no, that room is on fire!

© PeteLX

Wait, that's just the reflection of a sunset.

6. A tropical island?

© pilaf

No, just a mossy rock.

7. Is someone selling baked goods out of the back of their car?

© Flynnbojangels

Nope, reflection again.

8. A really cool painting?

© spicedpumpkins

No, that's Namib-Naukluft National Park in Namibia.

9. Angry waves or clouds?

© jebleez

We may never know.

10. What a huge goose?

© ajax_2232

Okay, that's just great photography.

11. What a cool aerial view of a beach!

© BrandonHarwood

Nope, just a puddle.

12. Eric Cartman makes a surprise appearance.

© Edders19

Every lens flare should be this cool, tbh.

13. Is that a gigantic crab lord taking a casual stroll on its own planet?

© renegadepathfinder

Or a lobster in a bucket? (I like the first interpretation better)

14. Planets are so cool.

© Christopher Jonassen

Yes, they will always be really cool, but this picture is of the bottoms of old frying pans.

15. A starry night sky

© LucyDreads

Nope, a puddle again.