Legoland Hotel in Carlsbad, Calif.

The Legoland Hotel’s 250 rooms come in three themes. This is the “Adventure” theme.  (Christopher Reynolds / Los Angeles Times)

A long, shallow pool at the Legoland Hotel.   (Christopher Reynolds / Los Angeles Times)

Skyline Cafe includes an ever-changing city skyline, with moving parts and changing lights, behind glass.  (Christopher Reynolds / Los Angeles Times)

Inside Bricks Family Restaurant, a buffet. Bricks has a kids buffet table, about 18 inches shorter than the adult version.  (Christopher Reynolds / Los Angeles Times)

The Legoland Hotel’s staffing includes kid-entertainers like Cobra Jones (so his nameplate says), who run activities and contests.  (Christopher Reynolds / Los Angeles Times)

The Legoland Hotel’s public spaces are dominated by kids’ play areas and thousands of Lego bricks.  (Christopher Reynolds / Los Angeles Times)

Mason Eugenio, 11, plays with a bow he made from Lego pieces.  (Christopher Reynolds / Los Angeles Times)

The Legoland Hotel has daily building contests. This girl’s winged yellow pyramid took second place on April 12.  (Christopher Reynolds / Los Angeles Times)

Looking up at the dragon at the Legoland Hotel’s entrance.   (Christopher Reynolds / Los Angeles Times)