In 1953, a group of Wisconsin high school students helped build a hospital by collecting over a million pennies.

A lush indoor jungle fills this bustling Madrid transportation hub.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This lucky bronze frog was gifted to Madrid by a casino.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

This 15th century pharmacy displays a beautiful collection of ancient medicine jars.

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

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

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Mountain where Jesus was first tempted by the Devil.

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.

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

A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

Soaring over the Niagara Whirlpool since 1916.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

Homemade outdoor church and sculpture garden decorated with glass shards.

A huge, bustling local market in Panama City.

This church was transported brick by brick from the ruins of a 16th-century city into Panama City's current historic district.

A pocket of jungle amidst urban expansion in Panama.

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

This architectural stunner is one of the few surviving Egyptian Revival theaters in the U.S.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...