The Greenhouse Luton is a sauna and spa for gay and bisexual men on Crawley Road in Luton, and one of three Greenhouse clubs alongside Darlaston and Newport. It says it has been running for more than 15 years and draws men from across the country.

The club lists a cave-style jacuzzi for twenty, a Turkish steam room for thirty, a dry sauna, a sun shower, two large shower blocks and a locker room for 140, along with a cafe bar serving food and a large choice of rest areas and private rest areas. Themed days in its programme include naked and underwear-or-naturist sessions and a Tuesday bi night. It opens at 10 am most days and 11 am on Sundays, staying open until midnight in the week, 4 am after Friday and 6 am after Saturday. A sexual health clinic is held at the club on set afternoons each month.