A rocky point shelters a clear, warm bay at Playa Balandra, 21 km (13 miles) north of La Paz. Several small coves and pristine beaches appear and disappear with the tides, but the water is calm and shallow enough that you can wade between them. This is Mexico's most famous beach, so the most popular way to visit is with a boat tour, whose guide typically provides beach chairs, snorkeling gear, and lunch. If you go independently, there are some restrictions, as Balandra was named an ecological conservation site by UNESCO. There is an entrance fee of about $3 per person, and you can stay for up to a maximum of four hours during either a morning (8--noon) or afternoon (1--5) time slot. A maximum of 450 people are allowed to enter during each time slot, so if you're traveling during peak season (or even on a weekend), you may want to arrive and line up early to guarantee admission. You will be made to leave once your time slot closes, regardless of when you arrived. The most iconic site at Balandra is "El Hongo," a rock formation that looks like a mushroom. It's a photo op, for sure, but climbing on it is forbidden. There's also a 30-minute hike from the parking lot up to a panoramic viewpoint overlooking the bay. When walking in the shallow waters, you're advised to shuffle your feet, kicking up sand to disturb any potentially sleeping sting rays. Sand flies can be a nuisance on the beach, particularly between July and October. Amenities: parking (fee). Best for: snorkeling; swimming.