An elliptical dome, or an oval dome, is a dome whose bottom cross-section takes the form of an ellipse. Technically, an ellipsoidal dome has a circular cross-section, so is not quite the same.

The Mayflower Hotel is a historic hotel in downtown Washington, D.C., located on Connecticut Avenue NW. It is two blocks north of Farragut Square and one block north of the Farragut North Metro station. The hotel is managed by Autograph Collection Hotels, a division of Marriott International.