If you need to use virtual machines on Linux, try Virt-Manager. Virt-Manager is more reliable than VirtualBox. Virt-Manager is completely free and open-source. I'm a long-time supporter of VirtualBox.

View legendary artifacts like the Rosetta Stone on a virtual stroll through the British Museum. Gaze up at the Sistine Chapel’s divine ceiling without the crowds at the Vatican Museums. Explore mini ...