Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

A castle built for love, and abandoned due to heartbreak.

The purported world's shortest international bridge connects a homeowner in Canada to his backyard in New York.

This tiny little island has, as the name says, just enough room for its single house.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

A monument to the 17,000 Chinese who worked and died to build Canada's Pacific Railway.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Soaring over the Niagara Whirlpool since 1916.

One of Australia's famed "Big Things," this giant fruit was once stolen as part of a publicity stunt.

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

A castle hand-built by a Spanish dreamer in the Australian tropical jungle.

An ethereal glowing blue ocean cave in Croatia.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

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

Medieval torture techniques with a modern conscience.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The ancient latrines of the Greeks, in all their public glory.

The third version of this tall sailing ship sits, rusted and burnt, in Lake Ontario.