Caesars Palace, which opened in 1966, cost $25 million to build (they've added more than $1 billion in renovations since) and stretches over 85 acres and encompasses spectacular fountains, three casinos, 12 restaurants, a health spa, a beauty salon, the Appian Way shopping area, tennis courts and 4 entertainment lounges. Within its 129,000 square feet of luxe casino space, Caesars offers slot machines that accept amounts from 5¢ to $500.