Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

A monument to a beloved aquatic folk hero in the Irish town of Dingle.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

From Nunavut to Tierra del Fuego, you won't find any lighthouse higher than this one.

Once a Catholic mission, this small town tucked between the ocean and the mountains is now a magical spot for art and history lovers.

One of the very few mosques built by the Ottomans still standing in Croatia is now a Catholic church.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This large stone off the coast of Martinique had a brief career in the Royal Navy.

The blinking light atop the iconic landmark has been sending secret messages for decades.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Eighty million natural history specimens call this gargantuan museum home.

A Tudor-style castle in Brazil holds one of the world's largest armory collections.

The massive gardens and office of a Brazilian sculptor.

The world's largest rotating world.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.