Rare and gorgeous birds abound in this protected wildlife sanctuary.

Home to the deepest rift anywhere on Earth.

After this former brothel closed, its interior remained almost frozen in time.

The magic's in the hole!

Years of archaeology, just chillin' by the water cooler.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

A breathtaking 19th-century trail overlooks Lake Tahoe.

One woman's Viking Castle on Lake Tahoe.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

Sofia's legislative center is continuously reinventing itself.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

A striking symbol of the Bulgarian capital.

An homage to the medieval rulers of Bulgaria.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

Every plane, auto, and bicycle in this collection is kept in working order and are regularly demonstrated to the public.

The first bridge observation tower in the U.S. offers one of the best views of Maine.

This 19th century granite fortification is one of the most well preserved forts in New England.

The eccentric mansion of one the most popular horror authors of modern times.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.