Eight websites every traveler needs

vacationist.com
Private flash sales on stays at some of the world's most stylish and luxurious hotels.

hopstop.com
Subway and bus directions for eight domestic (New York, Boston, and Washington, D.C., among others) and two international (Paris and London) cities.

oanda.com
T+L’s currency converter of choice, covering 164 different currencies.

thebathroomdiaries.com
Public restroom locations for more than 120 countries.

travel.state.gov
Travel advisories covering everything from civil unrest to health concerns.

travelersnet.com
Lists phone numbers for more than 100 domestic and international airlines.

urbanrail.net
Comprehensive subway maps for 250–300 cities worldwide.

world-airport-codes.com
Searchable database of more than 9,000 worldwide airport codes.