Happy Tax Day! Now, where did your tax dollars go?

Like it or not, Americans have a date with the IRS today. In a few hours, our tax forms will have been sent in… yet most of us will still be left wondering, “How will the government spend our money?”

In February, we launched the Data Viz Challenge to answer that very question. The challenge was a five-week competition that asked developers to visualize how our federal income tax dollars are spent. We received more than 40 thought-provoking entries that each take a unique approach to making this data more accessible to taxpayers.

Take a look at the variety of visualizations in this short video:

The entries ranged from quirky and fun to serious and academic. Some were as simple as a receipt, others showed us how many minutes or days we work to cover public spending. One even rendered the data as a cityscape and invited people to climb the towers virtually.

In the end, our jury selected Anil Kandangath’s “Where Did My Tax Dollars Go?” as our Grand Prize winner. As the jury noted, his entry is information-rich but elegantly designed, and at no point while interacting with the visualization do you lose the “big picture.” Anil’s entry is a great example of how data visualization can take boring, complicated, but critically important information and make it accessible to everyone. Congratulations, Anil.

Thank you to all of the entrants and our partners Eyebeam and Whatwepayfor.com for making this possible. We hope these submissions help you better understand where your tax dollars are spent—and even inject a little bit of fun into your tax day this year. Happy filing!

Google maps: New Street View imagery of historic sites in Italy and France

We’ve been busy pedaling the Street View trike around the nooks and crannies of storied sites in Europe, including palaces, monuments and castles, so you can explore them in Google Maps with Street View.

Starting today, you can view some of the most historic and architecturally significant landmarks in Italy and France, including UNESCO sites in Rome, the center of Florence and stunning chateaux in the French countryside.

In addition to seeing the exterior of archaeological sites like the Imperial Forum and the Colosseum in Rome, you can now explore inside the Colosseum and imagine yourself viewing naumachiae—simulated sea battles for which the Colosseum was filled with water—or speaking with statesmen inside the Imperial Forum.

Inside the Colosseum, Rome

In few clicks you can navigate through centuries of history. Start at the birthplace of Rome, the Palatine Hill, where the mythical founders of the city, Romulus and Remus were found and saved by a she-wolf, and where the most ancient buildings of the city are located. Follow the Appian Way, a little path that became one of the most strategically important roads of ancient Rome. After the long walk, experience the splendor of Imperial Rome at the Thermae (Baths) of Diocletian—ancient wellness and cultural centers with 33 acres of pools, gymnasiums and public libraries.

Baths of Diocletian

After wandering around Rome, you can fast forward in time to witness the celebrated architectural wonders of the Italian Renaissance, including Giotto’s Campanile (bell tower) and Brunelleschi’s Cupola (dome) in Santa Maria del Fiore in Florence. While in Florence don’t miss the opportunity to walk through Ponte Vecchio and shop at the famous artisan jewel stores built on top of it!

Santa Maria del Fiore, Florence

In France, you can view picturesque chateaux and indulge your fantasies of living like French royalty by taking a virtual stroll around the beautiful Fontainebleau.

Château de Fontainebleau

Start exploring these sites in our Street View gallery, or find your favorite historic spots directly in Google Maps.

Google Earth and London in 3D

On April 29, the eyes of the world will focus on London for the royal wedding of Prince William and Catherine Middleton, and the U.K. will deliver a royal celebration that will capture the imagination of a global audience. We’re doing our part too: following last week’s announcement of new aerial imagery for London, we’re expanding our 3D imagery of central London’s buildings and trees in Google Earth—including the entire royal procession route.

With this new 3D data covering the royal procession route, you can indulge yourself in a “royals’-eye” view to see the same sights that William and Catherine will see. Upon departing Westminster Abbey, you’ll pass the Houses of Parliament and Big Ben, the famous ministries on Whitehall and the Prime Minister’s residence at 10 Downing Street. Traverse Horse Guards Parade, and from there, you can travel down The Mall—with 3D trees lining the route—and see Buckingham Palace standing proudly at the finish.

This new 3D imagery isn’t limited to the royal parade route. Thousands of buildings are available, so people from around the globe can digitally experience the beauty of London. You can view buildings such as the British Museum, a treasure trove of historical artifacts, Goodge Street tube station, where General Eisenhower commanded allied forces in WWII, and Shaftesbury Avenue, the historical theatre district of London.

What’s more, we’ve also turned St James’ Park, Green Park and Hyde Park into a 3D lush green carpet, thanks to the help of our friends at the Royal Parks. We’ve modeled five different species of trees, and virtually planted more than 12,000 individual trees (available in Google Earth 6).

To see all the landmarks and greenery in Google Earth, check the 3D buildings box in the left-hand panel under “Layers,” type “London” in the search bar on the top left and use the navigation controls in the upper right to zoom in, spin around and tilt the view. Or you can go to Earth View on Google Maps in your browser.

Since moving to London from Leek, in Staffordshire, I’ve grown to appreciate all the royal and historic landmarks in the capital. So whether you’re standing near me and millions of my fellow Britons on the Mall on April 29 to catch a glimpse of the happy couple, or enjoying the spectacle from home, I hope this new 3D data for London brings you closer to this wonderful city.

A preview of the sunrise on April 29