At this California chicken ranch, four bucks will get you 18 eggs and a chorus of dancing animatronic poultry.

A massive underwater sinkhole made famous by Jacques Cousteau.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

Something's watching you.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The ruined remains of a coal mining ghost town are hidden within the woods.

Where the four original members of the Ramones hung out and revolutionized punk rock.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

The remnants of an early American attempt at missile defense.

What looks like a normal building is really a hollow facade hiding a subway vent.

A registered historic landmark shrouded in unsettling local legends.

A Milanese café entirely designed by the American director Wes Anderson.

In this century-old literary safehouse, print is alive and well.

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

Science fiction's grandfather has a fittingly marvelous tomb.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

A perilous medieval road leading right into the sea.