These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

An ancient temple in the middle of a residential neighborhood encapsulated by a beautiful tree.

Brasilia's oldest newsstand is sheltered by a wish-granting tunnel-tree.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

Legend has it that this stone moves down to the river sometimes to have a drink.

A home built with marble tombstones from the graves of 2,200 Union soldiers buried in a Virginia cemetery.

A Jenga-style cylindrical tower of books that appears to go on forever.

An ancient instrument used to measure the waters of the Nile so Egyptian farmers would know whether to expect famine or flood.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

Because sometimes the most efficient route from A to B isn't a straight line.

This woodland architectural installation acts as a camera obscura for the heavens.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

An unassuming secret door once led to a legendary watering hole.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

Stay overnight in the world's most sleekly designed rabbit hole, free of charge.

The land is home to swimming ponies and a legendary 18th-century treasure.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

This (occupied) house is 10 feet wide and full of spite.

Peer into this window for an interesting glimpse into the public utilities that make this city run.

This tiny home built on revenge appears to be scarcely wider than a Volkswagen.

This large, circular tomb is the final resting place of the first emperor of Rome.

Believed to hold the remains of Japan's most infamous fox spirit, this stone is said to kill those who dare approach.

The meteor that sealed the fate of the dinosaurs landed at this site, one of the largest impact craters in the world.