This museum honors the first Spanish land grant in California which is still in the hands of the original owner's family.

The largest collection of two headed animals in the world.

Where the leftovers of love affairs can live on forever.

Mexican food and folk art.

An astounding collection of medical specimens, including bits of President Lincoln.

A pocket of jungle amidst urban expansion in Panama.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.

Decades before the scandal, this staircase on the river was a literal "water gate."

A memorial to the victims of Argentina's "Dirty War."

A tower devoted to — and modeled after — the Divine Comedy.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

This stunning mass of ice spans 121 square miles and is still growing.

Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.