Stuck for ideas on what theme to go for in your health club spa? A trip to the Sieben Welten Therme & Spa resort could certainly provide some insights with its 'seven spa worlds'.

Opened in late 2010 and located just over an hour from Frankfurt in Germany, the resort offers more than 30,000sq m (322,917sq ft) of heat and bathing experiences, plus treatment spaces and restaurants.

The facilities have been grouped into spa cultures of the world. In Andalucia, for example, the focus is on thermal facilities including a sauna and bio-sauna, tepidarium, salt cave and experience showers.

In Asia, the focus is on treatments including the Indian wellness system of ayurveda, while Mexico is the centre for swimming pools and water rapids.

Arabia, Africa, India and Japan complete the themed areas. Details: http://www.siebenwelten.de