The Garden Cafe is built on a prominent spot, with panoramic views of the home's beautiful 40-acre grounds. While the palace sees millions of visitors a year, many of whom are content to watch the Changing of Guard from the gates outside, the cafe only seats 210.
Choices of sweet or savory snacks are available. Classic British fare like tea and scones will be available alongside foreign treats such as almond croissants, chicken foccacia and Greek salad. Anyone with a £17 ($29) ticket will be able to enter. A cappuccino, complete with a crown-shaped chocolate dusting, will only cost £2.65.
About 400,000 people are expected to visit the palace this summer. All proceeds from the summer opening, a tradition that began in 1993, will be used to maintain the Royal Collection, one of the world's top art collections. Last summer, £8.2 million was raised.