This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Elevated freight railway turned wildly successful urban park.

The celebrated eyesore created by starry-eyed sweethearts.

Macabre astrological automaton clock dating to the late 1400s.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

Pilgrimage site for star-crossed lovers.

An exotic wildlife habitat right off The Strip.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

Every inch of this chapel is covered in craftsmanship from across the world.

Jesus' footprints and the first catacombs in the world.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

One of two side-by-side totem pole parks dedicated to educating visitors on Tlingit history and culture.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Stunning examples of Russia's 18th-century wooden architecture.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Moscow's imposing monument to the Space Age.

Museum celebrating the achievements of the Soviet space program.