Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.

Ancient mysterious ruts carved in the bedrock.

Burial grounds for more than 1,000 bodies deep under the modern town of Rabat.

Stone Age solar temple is aligned with the sun on each equinox and solstice.

An abandoned set from the 1980 film "Popeye," claimed and repurposed as a theme park by creative locals.

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.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

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

The final resting place of the great navigator, or maybe his brother.

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

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

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

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

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

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

There’s a hidden military meme engraved on the World War II Memorial.

The "lovely red Vega" of the legendary record-settling pilot.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The largest guitar store in the world has been visited by some of music's all-time greats passing through upstate New York.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

A beautiful final resting place with some surprising residents.