The party town of choice for underage Americans (the legal drinking age here is 18, lower than the States’ 21). If you intend to partake of the infamous 'tequila with worm' in the hope of tripping your tits off you will be disappointed, for a start the worm is usually found in Mezcal (some consider to be Tequila’s big brother), and the worm does not have hallucinogenic or aphrodisiac properties – this appears to be a successful marketing ploy, save your dineros.
As with so many other countries and states, the authorities are looking to relax their laws on marijuana. Although still illegal, legalisation of medicinal marijuana has recently been passed by the Senate and being in possession of small amounts of recreational marijuana has been decriminalized. But buying and selling will still get you in trouble.
Tijuana also has a legal Red Light District - Zona Norte or locally known as La Coahuila – the name of the main street with many strip clubs come brothels (no pun intended). Hong Kong Gentlemen’s Club and Adelita Bar can be found here.
In all cases, not matter how you want to party, stay safe and don’t be an obvious tourist.
If you're looking for sex, use the legal and therefore regulated brothels, not girls on the street - the girls in brothels are health checked regularly and in most cases are required to register with the authorities thus the likelihood they are underage or trafficked is much reduced.
When it comes to hard drugs if that’s your bag (sorry), in some of the above cases, possession of small amounts won’t land you in jail although it may cost you some of your spends…but in all cases make no mistake, buying and selling is illegal.
Do your research beforehand and ask around among fellow travellers.