This Australian beach is composed of tiny shells.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

An opal mining town in the middle of Australia where people live, worship, and shop underground.

A small, but award-winning beach known for its literally spotless reputation.

The only pollutant in the clear blue water is sunscreen.

A massive stairway that almost wasn't leads to one of Australia's most scenic vistas.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The largest and most famous wax anatomical collection anywhere in the world.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The first piece of public art dedicated to LGBT rights.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A popular European tradition makes its way to the states on one of America's most famous bridges.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

The first Catholic church in Singapore is a Neo-Gothic colossus with a rich architectural history.

This $62 million dollar temple was erected to house one little dental fragment of religious history.