This oceanfront 1920s house museum offers visitors historic art and rare plants across five distinct ecosystems.

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

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A second generation sun-powered marvel lights up the night.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

Half-sized replica of the Leaning Tower of Pisa built to honor Galileo.

In Chicago, an empty relic of a time when neighborhood zoos were more common.

A small chapel celebrating the spiritual bond between dogs and humans.

This New England covered bridge is home to the tale of a jilted lover known to haunt the area.

It's a repurposed treasure trove of history, located just an hour away from Acadia National Park.

The only surviving fragment of the lost Narragansett Pier Casino.

A castle on a hill once named "the most beautiful high school in Massachusetts."

New Hampshire's first neighborhood is now preserved as a historic village with live action role players.

The world's largest collection of historic U.S. military naval vessels.

A monument to the first person to sail around the world solo, nowhere close to where he was born, set sail, or landed.

The New Bedford Whaling Museum in Massachusetts displays what it calls the world's largest ship model.

Former private property that was hidden up a trail in the woods with thousands of bright yellow daffodils.

Historic seaside park featuring explorable, abandoned military structures.

Some big-name visitors have patronized this small-town library named for an oil man's daughter.

The murals have transformed a residential alley into a vibrant drive-through gallery.

The palatial McDonald's that inspired Wesley Willis.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.