This sculpture garden is a serene oasis wedged in the middle of a busy highway.

The burial place of some of Mexico's most prominent residents is full of macabre stories and hidden masonic symbols.

Mexico's largest collection of masks is found in the ruins of an abandoned convent.

This incredible college library is a visual masterpiece of mosaic art. It also looks kind of like a giant boombox.

Hidden inside a hotel is a museum of miniature models depicting the traditions and history of Mexico.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

The Greek island's old British cemetery feels like a forgotten garden.

A poignant memorial shows the widows and children left heartbroken by the worst fishing disaster in Scottish history.

The world's first hotel built in an abandoned water-filled quarry.

Be on the lookout for the symbolic insect all over the city.

Once upon a time these giant concrete tanks were used by local fishermen to clean their wild-caught mussels.

The eclectic home of a leading Turkish architect is a gorgeous piece of eye candy.

A haunting theme park is slowly being swallowed by the jungle.

An Art Nouveau gem hides beneath the layers of city grime obscuring this once-magnificent building.

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

A pretty park of over 1,600 olive trees that grew from just three saplings brought over from Spain.

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

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

From 135 feet high riders plunge down the world's tallest freestanding body slide at 65 mph.

A small, emotionally charged room inside the Mario Testino Museum dedicated to Princess Diana and one famous photo shoot.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

You feel like you're in a forest, but you're actually walking amidst the branches and trunks of a single giant tree.

Overshadowed by other, more famous Maltese catacombs, this ancient burial chamber has one of the best examples of a ritual agape table.