No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

It took 160 years to complete the most ornate church in Ecuador.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A glacier pocked with ice caves and surrounded by rainforests.

The glacier tucked within a New Zealand rainforest.

After the devastating 2011 earthquake, historic Christchurch begins to recover, starting with the pop-up Re:START mall.

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

Relics of Australia's convict past, and a modern scene of unimaginable horror.

One of the best beaches in the entire world.

Aqua white sand highlighted with fiery red rocks.

The decommissioned submarine is now the symbol of a small, inland Australian town.

Three-story concrete ram with a permanent gift shop.

The tallest mountain in mainland Australia.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Concrete spud looks like the North American Sebago.

This massive water spout has been luring visitors for hundreds of years, some to their death.

Clusters of huge boulders in the Australian Outback.

Where an entire elephant skeleton, a snakeskin table runner, and thousands of animal remains become art.

A white Buddhist temple with a golden restroom.

You can walk up Thailand’s naturally non-slip waterfall.

This elephant kraal is the only one remaining in Thailand, dating back to the 16th century when these massive mammals were integral players in war and trade.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.