The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

Approximately 250,000 people left homeless by the great earthquake and fires found shelter in Golden Gate Park.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

Iconic red and white plaques show the creative names invented to navigate the city streets.

This beautifully deceptive waterfall is something far different from what it appears to be.

The stoutest tree in the world.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

This restored colonial house was once home to the botanist responsible for bringing avocados to the U.S.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

This charming candle shop has been in business since 1789.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

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

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

A lush indoor jungle fills this bustling Madrid transportation hub.

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

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

Three floors of musical instruments coming from all corners of the world and hundreds of years of musical history.

A fantastical 13th-century fortification sandwiched by a modern hotel in central Brussels.

A little sculpture with a large wardrobe.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.