One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

The final resting place of soldiers' loyal canine companions.

Perhaps the most spectacular grotto along the Algarve coastline.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A hidden three-foot-wide house separates these two regal churches.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

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

Spain's largest bullring offers a unique glimpse at architecture and history.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

This monument is dedicated to a young boy who survived a disaster that forced Edinburgh to reevaluate its building codes.

Local lore says the devil built this beautiful medieval bridge to help a fleeing bandit.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A colorful hidden village of the fair folk.