A sixth-century Byzantine cistern hidden below a modern carpet store.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A marvel of Byzantine engineering under the streets of Istanbul.

These bronze sculptures sow whimsy by hamming it up on a pedestrian mall.

The largest shot tower in Australia is a unique reminder of industrial ammunitions history.

The most loyal of little dogs, or a Victorian era publicity stunt?

This 16th-century house tells the city's history through old artifacts and quirky tales.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

The final resting place of soldiers' loyal canine companions.

Single runway interrupted by a busy road that cuts across its middle.

Marvel of green building techniques that sings with the wind.

The best place to encounter plants and animals that can only be found in New Caledonia.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

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

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

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

An exotic wildlife habitat right off The Strip.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.