Of the 16 lighthouses originally constructed along the Texas coast, Port Isabel is the only one open to the public. With a perch 50 feet above the ground, it is popular with photographers and other visitors, because they can enjoy great views of South Padre Island and the beaches. In fact, a number of couples have climbed the 75 winding stairs, including three short ladders, to exchange wedding vows at the top of the tower. The grassy knoll where the lighthouse sits is ideal for strolling and relaxing, and the facilities are for historical study and scenic viewing. Picnic tables are also available.