During World War II the hotel was converted to the Naval Convalescent Hospital, Santa Cruz.

The hotel was built in 1911 by Fred Swanton on Beach Street as a Santa Cruz Boardwalk development plan.

The Resort Hotel had: a pool; gardens; and a grand pedestrian bridge to cross the street to visit the beach.

The Casino offered 500 beach dressing rooms, a theater, a cafe, seaside grill, ballroom and roof gardens.

But it was widely known visitors could find boats at the pleasure pier, now called the Santa Cruz Wharf, to take them out in ships into the harbor to gamble in the 1910 and 1920s.

In 1911 Charles I. D. Looff family built a Merry-go-round carousel and in 1924 the Giant Dipper roller coaster..

The new Casino, Plunge and Cottage brought many new guests to the Santa Cruz Beach Boardwalk by the end of 1907.

One service line ran from DeLaveaga Park along Water Street and Pacific Avenue to the beach.

The Southern Pacific Railroad ran a summer excursion train, called Suntan Special, between San Francisco and the hotel from 1927 to 1959.

In 1924 Isham Jones's band played jazz, in the 1930s and into the 1950 Big Bands-Jazz play like: Artie Shaw, Ted Fio Rito, Lawrence Welk, Benny Goodman, Skinnay Ennis, Paul Whiteman, Billy May, Tex Beneke, Les Elgart, Hal McIntyre and Si Zentner.

[11] Many movies and TV shows have been shot on the Casino's Boardwalk: Sudden Impact, Mr. Peabody and the Mermaid, America Screams, and The Lost Boys.

[12] Built in 1907 on the Santa Cruz Beach Boardwalk, the Plunge Natatorium was an indoor swimming pool that used heated Monterey Bay Pacific Ocean salt water.

The Water Carnival had entertainment like: Ruth Kahl, known as the human submarine, a world record holder for deep underwater swimming down to 303 feet; Dido Scettrini, Shirley Wightman and Harry Murray all human submarines, flying trapeze artists; fire divers; Stratosphere Plungers; water ballets; Duke Kahanamoku an Olympic swimmer and surfer; fire dives; Don "Bosco" Patterson log zip line rider, swimming team races and other exhibitions.

After the 1989 Loma Prieta Earthquake this mini-golf course was replaced with a new one, called in Neptune's Kingdom[13][14][15][16][17][18][19] In 1910 Swanton had a large resort hotel built.

Across from the new Casino architect George Applegarth designed and built the new 100,000 square feet 300 rooms hotel.

With more guest in 1926, the Seaside Company built the Casa del Rey Apartments designed by architect William C. Hays.

Casa del Rey Apartments were built in Spanish revival style and had some ocean-view luxury suites.

Casa Del Rey Spanish Gardens had: trees, flower, bushes, playground and glass solarium.