Xtra Fuels

Discover the world from under the sea at the National Aquarium in Baltimore. Built to inspire visitors to celebrate and nurture the world´s aquatic habitats, from tropical rain forests to coral reefs, this public aquarium contains three buildings worth of fascinating creatures and family fun. Among major attractions are the dolphin display, central ray pool, multiple-story shark tank and the rooftop rainforest.

Scale up a 44-foot high wall and climb over thousands of square feet of bouldering area at Earth Treks Climbing Center. Get plenty of practice for the real thing–although the setting may be artificial, the adrenaline rush from this recreational climbing experience is real.