The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The first and only carousel with a lineup entirely of insects.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

A historic arena where the Beatles played their first concert in the U.S.

A haunting tribute to pioneering photographer Clover Adams.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

The most decorated dog of World War I is preserved in the Smithsonian.

This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The city is full of whimsical portals to another world.

On Hilton Head Island this bronze King of the Sea rules all things briny—and lets you know if you’re late for lunch.

A century-old tradition has culminated in a small but singular collection of feline effigies.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

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."

2300-year-old Roman road connecting the empire.

Send a postcard while vacationing with Satan.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

Largest Roman Catholic church in North America.

This grand gothic brewery has been pumping out suds for over a hundred years.

A diminutive memorial marks the site of a successful assassination by a right-wing death squad in America's capital.