Machu Picchu

"Bart is finally trapped, in that paradise above the clouds."

- Homer, reassuring Marge that they will find Bart

Machu Picchu is a historical site and tourist attraction located in Peru.

History
The Simpson family visited the site looking for Bart after he had attached a tracking device from his cell phone to a bird, which flew to Machu Picchu. While there Marge was visited by an old Incan god, who told her that she had been overprotecting Bart. Marge realized that he was right and, after finding the bird, she and the family returned back home.

When they returned home, Maggie was accidentally left behind in Machu Picchu and ended up being worshipped as a goddess.