The House can be visited
Banqueting House

The Banqueting House in London is the last surviving structure of the Whitehall Palace. As the city's first classical residence, it marked a turning point in English architecture and is an example of Palladianism.
History+
The current residence is the third building on this site. After the demolition of the first hall under King James I and the destruction of the second by fire, the Banqueting House was built between 1619 and 1622 by Inigo Jones for James I. Jones was inspired by Andrea Palladio. The ceiling paintings by Peter Paul Rubens pay homage to the Stuart dynasty and for which Rubens received 3,000 pounds and was knighted. King Charles I was executed in front of the building on January 30, 1649, commemorated by a bust. Whitehall Palace, to which the Banqueting House belonged, burned down in 1698.
Source: Wikipedia · Licence: CC BY-SA 4.0
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 51.5046, -0.1260