The Kibble Palace at Glasgow Botanic Gardens

The Kibble Palace started life as a private conservatory at John Kibble's home on Loch Long and was taken apart and re-erected in Glasgow's Botanic Gardens in 1873. Under its main dome, seen here, marble statues stand among the National Collection of Tree Ferns, which has grown in the house since around 1880. The slim iron columns and the ring of glass overhead make it feel more like a garden pavilion than a hothouse, and entry is free.