This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

An 11th-century mountaintop fortress that played a crucial role in Italy's papal wars is now a vacation rental.

A band of aerialists and circus performers putting on incredible shows in East Williamsburg.

Leaf through over 30,000 artists' sketchbooks in what may be the world's largest collection of doodles

A priceless work of art created by the saint's own blood sister hangs in a San Antonio basilica.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

A mother's mourning for her lost son is remembered in this small park embedded with his memory.

This big empty pig is a nostalgic throwback to mid-20th-century Texas barbecue.

The 40-foot-tall votive candle is the largest of its kind.

A National Historic Landmark with a scenic clock tower and park filled with deer and peacocks, plus a military museum.

This museum tucked below a charming cafe gives a brief snapshot of photographic history.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

This public library and its impressive collection of academic books have not changed since the 17th century.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

A building facade covered with the statues of 11 giants of Tajik literature.

This Scottish manor house is a lush relic from the life of a literary great.

The main gates have been locked since 1745 and will remain so until the Stuart Dynasty returns to the throne.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

At high tide this strange footbridge appears to have no purpose whatsoever.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.