Gay bathhouses that once remained in the shadows to stay in business are now seeking attention to keep their doors open. Some are doing aggressive online advertising and community outreach. Others tout their upscale amenities like plush towels and marble baths. A bathhouse in Ohio has even added hotel rooms and a nightclub. […] In the heyday of bathhouses in the late 1970s, there were nearly 200 gay bathhouses in cities across the U.S., but by 1990, the total had dropped to approximately 90, according to Damron, the publisher of an annual gay travel guide. In the last decade, bathhouses,...