Here's what to see and do in Lisbon, Portugal's capital city on the Atlantic coast.
Tour these fascinating limestone caverns on your Costa del Sol vacation. Discovered accidentally by a group of young boys in 1959, the caves contain skeletal remains and artifacts that show they were inhabited from about 25,000 B.C.
A 620-acre nature preserve at the base of Arenal Volcano provides an up close and personal look at the flora and fauna that make their homes near this very active crater.
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