MGM Signature Suites Tower 1 Penthouse Room - Las Vegas, NV. This is a video tour of a Penthouse Suite at MGM Signature Suites in Las Vegas, NV. It was a very nice room! Vegas is a really fun place. If you're looking for a big room then I highly recommend the MGM Signature Suites in Las Vegas. Please share this video with others and good luck in Vegas. Cheers!