Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

An ancient neolithic tomb that only sees the sun twice a year.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

Beasts and branches swirl in sandstone carvings, interrupted by one strange creature.

Erotic art covers the walls of the largest ancient pleasure palace.

This South Pacific volcano has been blowing its stack for over 800 years and is said to be home to a cult leader waiting to be reborn.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The peaceful gravesite of a rugged wild west gunman echoes the touching story of his last days.

Once the path of a railway tunnel, now home to thousands of glowing insects.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

An idyllic swimming pool tells the tale of Hemingway's trouble with women.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

A classic Route 66 landmark that was built with scrap lumber and is held together with kitsch and puns.

This bar named after the world's first mixed cocktail was home to one of New Orleans' most notorious politicians.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

A remarkably intact castle that once was the largest in Ireland.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.