Soi Pratuchai

Soi Pratuchai (alias: “Soi Twilight”; Thai: ซอยประตูชัย, meaning “Triumphal arch”) is a gay related entertainment walkway in the Bangrak district of Bangkok, Thailand, catering mainly, though not exclusively, to foreign tourists and expatriates. While Soi Pratuchai is internationally known as a red light district for gay at the heart of Bangkok's sex industry, the city in fact has numerous gay related red-light districts that are far more popular with Thai.

Soi Pratuchai consists of a "7"-shaped walkway running between Surawong Road and Rama IV Road. Soi Pratuchai is within walking distance from the BTS Skytrain Silom Line's Sala Daeng Station, and MRT Blue Line's Si Lom Station.

From south to north, it has a lot of gay bars, restaurants, cafés and salons:

Most Soi Pratuchai go-go bars feature boys dancing on a stage. The dancers (and even occasionally the serving staff) are generally available to customers willing to pay a bar fine to take them out of the bar; the fees for sexual services are negotiated separately. Some establishments advertising "massages" are in fact disguised brothels, and a few famous "blowjob bars" offer oral sex at the main bar or in back rooms.

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Wikipedia