Currency exchange booths in airports and touristy areas usually offer poor rates and high commissions. Exchanging large sums here can cost you a significant amount.
What to do instead: Use ATMs affiliated with banks for better exchange rates, or use a travel-friendly credit card with no foreign transaction fees.
There are a number of structures across the world that have stood the test of time, and have witnessed the fiercest of wars, civilization changes, and so much more. Witness to it all, these ancient sites around the world deserve a spot in your travel wish list.