Although not specifically glass - the entrance to Sorrisniva, the ice hotel in Alta certainly looked as though it could have been!
Made each year in November - this hotel houses 30 bedrooms, a fully operating chapel for marriages, numerous ice sculptures and a full sized bar made completely from snow and ice.
Melting each year and rebuilt from scratch, it is based on differing themes from one year to the next, so it is never the same!
@cindyrez, originally we had a chance to sleep there - but it turned out that not enough people were interested in the party we were with so it wasn't to be! The rooms were pretty small so in retrospect maybe it wasn't a bad thing!