Along one of the most alluring stretches of the Pacific Mexico coastline, known as the Mexican Riviera, the lush jungle of the Sierra Madre drops down to meet idyllic palm lined beaches and small tropical coves. At the northern tip of an area along this coast known as the Costa Allegre is the Bay of Banderas (the largest bay in Mexico). Cradled by this wondrous bay, with the jungle-covered mountains behind it is, Puerto Vallarta. While the river winds it's way down from the mountains and through Old Vallarta on its way to the bay, the cool sea breezes come in to meet it. Acapulco is the most southern end of the Mexican Riviera with Ixtapa and Zihuatanejo in between. All lying along the beautiful Pacific Ocean.