Sinus infections usually begin with the symptoms of a cold (for example, a runny nose, occasional cough and/or mild fever), and then develop into pain and pressure in the sinus cavities. About 7 to 10 days after initial cold-like symptoms other symptoms develop that suggest you may have a sinus infection.
The Ruins of Sescheron. The Ruins of Sescheron are available in the Adventure Mode of Diablo III. Specifically in Act III, near the Arreat Crater. They were released as part of patch 2.3. The area is designed to have a melancholy feel to it, with elements such as funerary art and pyres.
Trona Pinnacles is a BLM national landmark located in Searles valley near the town of Trona. A bit off the beaten track but if you find yourself in area, check it out. The tufa towers, which formed fairly recently (geologically speaking) as remnants of a series of lakes that existed in this area of Southern California in the Pleistocene, are pretty neat to photograph and hike around.