Are there still sweat lodges available?
Yes. Many tribes still use sweat lodges in their traditional practices.
Generally, sweat lodge ceremonies are lead by an elder of a tribe as purification, healing, or a rebirthing process. The exact details including the type of structure, and specific ceremonial practices differ from tribe to tribe.
Many non-Native groups and individuals use sweat lodges for their own purposes as well.
Hope this helps!
Auntie Manda