The Gaslamp's oldest building houses an unassuming nightlife triple threat far from retirement. The Bitter End is a three dimensional venue with infinite possibilities lurking in dim corridors, ensuring no patron goes home alone. The main floor is a classic San Francisco inspired space with a 40-ft mahogany bar and tall tables. Like most evenings spent about the Gaslamp, there are many decisions to be made from first base. Bitter End basics: Guests going up will meet a mellow lounge with a sensual air and oversized recliners made for two. Guests going down will encounter an underground dance club packed with purveyors of risque. What will you choose?