Collecting all the bottles per episode will unlock the episode's safe. The locations listed below are found in no particular order. Each location also has it's corresponding spot on the map so refer to the map, descriptions and pictures below.
Safe: On the ship docked to the middle eastern side of the map
Sir Raleigh's Frog Hat
01-03: Circus area, west of the hideout
01. On top of a wagon
02. Inside the basin kiosk
03. Behind a tree to the west
04-06:
04. On top of the two-storey house northeast of the hideout
05. On the archway north of #4
06. On top of a chimney of the house north of the hideout
07-13:
07. On top of the banner near the wall arch
08. On top of the wall above #8, near the edge
09. Under the arch wall, between two wooden crates, below #8 and #7
10. Along the rope under the pathway south of #9
11. On the banner, outer wall facing the sea, southeast of #10
12. On the rooftop of the shoemaker's house
13. Behind the tower south of the shoemaker's house
14. On the boat, docked to the southeast. You have to jump on the catapul west of it to reach it.
15-20:
15. On top of the banner pole, south of the bakery
16. In the catapult cup behind the tower to the northeast of the bakery
17. On the rope above the ship near the main castle bridge
18. On the rooftop of a series of houses northwest of the bakery
19. On the springy textile, on the roof of the houses west of the bakery
20. On the clock tower
21. Requires: Archer costume
On the roof of the main circus tent
22-26:
22. On top of the watchtowers west of the smithy
23. On the roof of the house a bit southeast of the tavern
24. On top of the flag/ banner, in the corner watchtower, east of the tavern
25. On the lower roof of the house souteast of the tavern
26. In the catapult at the back of the tavern
27. On top of the one of the columns by the castle gate.
28. On top of a banner/ flag, on a watchtower southwest of the bakery (southeast of the smithy)
29. Under the bridge. You have to fire an arrow to the target across it to reach it. The arrows are found by the docks. Refer to the map below.
30. On the rooftop south of the smithy