Atlas Obscura is one of the largest, most well-known and most impeccably awesome archives of amazing places, foods and experiences in the world.
Here is their list of places to see in Costa Rica! From a neon blue river, to a dog shelter up in the mountains where strays roam free and wild, to planes repurposed as restaurants and houses, to a sloth rehabilitation center in the jungle, there is more than meets the eye to Costa Rica! How many of these interesting places have you been to?
Note: Some of these you cannot visit or see anymore, which have been marked with (Permanently Closed). So therefore, if you haven't already seen them, I don't know if you'll ever be able to completely finish this list.
Note 2: This is as of June 27, 2024. Sorry future people, there will definitely be more that can't be added.