Ripley's Believe It or Not is a small museum of odd things from around the world (Robert LeRoy Ripley visited 201 countries). There are interactive exhibits, huge exhibits, all manner of strange exhibits! What's great is that kids of all ages like this museum. It ends up being a fun family memory.

Eleven rooms are filled with themed oddities. There is a life-sized statue of the tallest man that every lived, Robert Wadlow who grew to be 8'11" after a double hernia operation, with photos and stories about him. There are strange taxidermied animals from around the world- creepy. An interactive exhibit dares you to curl your tongue and make strange faces. Fertility gods and dance masks from other cultures make it interesting for world travelers. Two fertility statues from the Ivory Coast displayed here have resulted in over 2,000 confirmed pregnancies, even by women on birth control or with medical problems leading to difficulty conceiving.
A coffin outfitted with a bell sits next to an exhibit explaining how the phrase "saved by the bell" arose because many medical misdiagnoses led to bells being installed in coffins so people buried alive could ring the bell and be saved. Gravediggers worked at night so they could hear the bells in the quiet hours and this is how the phrase "graveyard shift" came to represent night shifts.
There are hundreds of letters from a man, Wayne Harbour, who tried to prove Ripley wrong- he investigated every record but never was able to find a flaw with Ripley's publications! At last count, Harbour had written over 24,000 letters of inquiry seeking verification of Ripley's facts. There's a Volkswagon beetle covered in musical instruments that are all playable- you can sing into the microphone, play the piano, strum the guitar, beat the drums- it's so cool! It is called Pico de Gallo, named after a Mexican hot sauce and inspired by Mexican mariachi bands.
The best part is the moving tunnel that you walk through at the end. It swirls around you and makes you feel like you're moving even though you aren't moving at all. The whole family will be cracking up at this, even teens.
Outside, the building itself tilts at an angle, which young kids find amusing.
A super fun and beautiful place to stay if you're visiting Orlando is Hyatt Grand Cypress- the pool has waterfalls and caves, and you can bike ride around a lake and past Spanish moss-strung oaks.

Directions

Ripley's Believe It or Not is located at 8201 International Drive, Orlando, FL 32819, call (407) 363-4418.
Admission is cheaper if you buy online: $19 for adults, $13 for kids aged 3-11. Kids under 3 are free. 
Hours are 9am-midnight daily. Call to confirm since there are seasonal closing time changes.

Click on map for interactive view