Lotus Hotel and Casino

The Lotus Hotel and Casino is located in Las Vegas. It is designed so that anyone entering would never want to leave because of all the addictive games, food (in the case of the book) and other activities, combined with the unlimited money. The hotel causes those inside never to age, while time goes on at an accelerated rate outside. Known victims include Darrin, Nico and Bianca di Angelo, Percy, Annabeth, and Grover.

The Lightning Thief
Percy, Annabeth, and Grover enter the hotel because they smell an alluring scent. They are offered a nice suite, and although Percy senses something is wrong, he goes against his better judgement and they indulge themselves in games. It is not only until Percy notices people from all different time periods that he is being affected by the hotel, and he snaps out of the trance. He grabs Annabeth and Grover and when they leave the hotel they realize that they have been in there for 5 days.

Film adaptation
In the film, instead of them just wanting to be at Lotus Hotel and Casino, Grover, Annabeth, and Percy had to get the last of Poseidon's Pearls. Once they had gotten in, a waitress gave them a Lotus Flower, and it gave the effect of them never wanting to leave, which resulted in symptoms similar to intoxication. They forgot why they were there and decided to stay there and have fun, as suggested by Annabeth. Finally, Percy realized what was going on when he saw a person playing a game about a movie in the 70's, who said this was the best movie of the year. Percy also heard Poseidon's voice in his head, telling him "Don't eat the flower" while he had a Lotus Flower in his hand and was about to eat it. He got the others to stop eating the Lotus Flowers and come back from their trance. On the way out, they have a big fight with the hotel security, then they grabbed the third pearl and stole a black Maserati which was up for contest, crashed through the front door in the Maserati and escaped.

The Titan's Curse
In The Titan's Curse, Bianca di Angelo and her brother Nico di Angelo are mentioned to have been to the Lotus Hotel and Casino before. They entered the hotel after World War II and stayed for several decades. Then, the Fury Alecto came and got them out and sent them off to school. Because Hades had them dipped in the river Lethe (the river of forgetfulness), Bianca and Nico couldn't remember anything before their stay.