Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Two small markers remember the Alamo's feline protectors.

Three hundred years of preserved Spanish colonial history in San Antonio.

These boots are made for selfies.

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.

The summer home of the largest colony of bats in the world.

Ask nicely, and stewards of a centuries-old charitable tradition will give you free bread and beer.

Medieval torture techniques with a modern conscience.

Something's missing between the arcades of the Palazzo della Ragione in "the city of the three withouts."

In medieval times this small stone seat was used as a bizarre way to punish insolvent debtors.

The incorrupt tongue of the patron saint of lost things is venerated in this basilica.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

The naturally mummified body of a peasant girl saint.

Fortified medieval tower house with lovely roof garden.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

An extraordinary collection of 18th century anatomical waxworks.

An unusual "skull with ears" sits in the crypt of this small church tucked away at the end of a narrow alley.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

A winding path built in secret on the edge of the continent.